news-releases - Doré Copper Mining Corp - Page 4

Doré Copper reports high-grade gold mineralization at Gwillim

   Download PDF   English   |   French   |   GERMAN

Toronto, Ontario – April 21, 2022 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) announces positive results from two drill holes totaling 819 metres completed in late 2021 on the western part of the Gwillim property, which is under a 50/50 joint venture with Argonaut Gold Inc. (through its wholly owned subsidiary Prodigy Gold Inc.). Gwillim is located approximately 8 kilometers by road northwest of Chibougamau, Québec. 

Drilling Highlights

KOD-21-02

  • 3.33 g/t Au over 13.3 meters, including 26.8 g/t Au over 1.0 metre and 23.2 g/t Au over 0.5 meter 
  • 3.39 g/t Au over 3.0 meters 
  • 10.14 g/t Au over 4.0 meters 

KOD-21-03

  • 3.03 g/t Au over 4.0 meters 
  • 4.64 g/t Au over 6.0 meters, including 11.69 g/t Au over 2.0 meters

Ernest Mast, President and CEO of Doré Copper, commented, “Today’s results on the Gwillim’s KOD zone demonstrate good continuity of the mineralization and have extended its depth to 400 meters vertical. We are in the process of compiling and re-evaluating all the historical data for the Gwillim mine and the KOD zone. Once completed, we and our JV partner Argonaut Gold Inc. will plan a drilling program to test the strike and depth extension of both deposits. On our main deliverable for the year, we expect to have the results of the preliminary economic assessment (PEA) for our hub-and-spoke operation model by mid-Q2 2022.” 

Gwillim Drilling Program 

Doré Copper drilled two holes in September 2021 to test the KOD zone, located 300 meters south of the mined Gwillim Main zone (Figure 1 and Table 1). Hole KOD-21-02 intersected three mineralized zones, including a 13.3 meter zone grading 3.33 g/t starting at a vertical depth of approximately 25 meters and an intercept of 4.0 meters at 10.14 g/t Au, which is interpreted as the KOD zone. Hole KOD-21-03, drilled 100 meters north-northwest of KOD-21-02, intersected two mineralized zones and demonstrated the continuity of the KOD zone at depth (Figure 2). The second mineralized zone, 6.0 meters at 4.64 g/t Au extended the KOD zone vertically by approximately 50 meters from prior historical intercepts (historical drill holes locations are approximate and will be georeferenced in the coming months) and is the deepest intersection to date at a vertical depth of 400 meters. 

Gwillim Property 

The Gwillim property totals 486 ha. The western part of the property (385 ha) is under a 50/50 joint venture between Dore Copper and Argonaut Gold Inc. (through its wholly owned subsidiary Prodigy Gold Inc.) with Dore Copper being the operator. The eastern part of the property (102 ha) is 100% owned by Dore Copper. 

Located on the joint venture land, the Gwillim mine operated between 1974 and 1976 and again from 1980 to 1984. In total 254,066 short tons were mined at a grade of 4.79 g/t Au1. Most of the production came from the Main zone, which extended along strike for 122 meters with an average width of 2.6 meters and up to a depth of 114 metres.

In 1987, two high-grade intercepts of 7.0 meters at 33 g/t Au and 7.9 meters at 17.9 g/t Au were drilled by Greenstone Resources Ltd. at moderate depths of 200 to 300 meters at the KOD zone (300 meters south of the mined Gwillim Main zone)2. A further 25 holes were drilled from the surface before a ramp was developed and the zone was further explored from underground in 1988 but not mined (some development through ore). In 1989, three more surface holes were drilled to depths of 400 meters with one hole confirming the extension of the high-grade mineralization beyond 300 meters vertical depth. An internal report from 1989 outlined a small historical resource (not NI 43-101 compliant) for the KOD Zone. No other significant exploration activities are reported after this work.

Gwillim is hosted within the Roy group in the Bruneau Formation, in pillowed basalts and gabbroic sill. Mineralization is hosted predominantly within east-west, steeply dipping structures containing quartz-carbonate veins with limited amounts of massive sulphides. At KOD, there are two parallel east-west vein zones, approximately 50 meters apart, with the mineralization predominantly occurring in the northernmost vein. The thickness of the mineralization varies between 0.3 and 5.0 meters. The KOD zone is open along strike and downdip to the east under the Gwillim lake.  

References:

1 Structural and Stratigraphic Control on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada – Leclerc et al., 1992 Society of economic geologist inc. V 107, pp. 963-989.

2 Diamond Drilling Report on the Gwillim Lake KOD Zone, Greenstone Resources (internal report) – Robert McIntosh, Project Geologist, Flanagan McAdam and Company, December 1989.

Table 1. Gwillim Assays Highlights from the 2021 Drill Program1

HoleFrom (m)To (m)Width1 (m)Au (g/t)Zone
KOD-21-0228.742.013.33.33unnamed
  including28.729.20.523.2unnamed
  including41.042.01.026.8unnamed

138.5141.53.03.39unnamed

203.5207.54.010.14KOD
KOD-21-03395.0399.04.03.03unnamed 

448.5454.56.04.64KOD
  Including448.5450.52.011.69KOD
The true width of the structures intersected is estimated at approximately 55-60% of the downhole width.
Figure 1. Surface plan of a portion of the Gwillim Property showing the location of the 2021 drill holes.
Figure 2. Cross-section of the KOD zone showing holes KOD-21-02 and 03.

Qualified Person

Andrey Rinta, P.Geo., the Exploration Manager of the Corporation and a “Qualified Person” within the meaning of National Instrument 43-101, has reviewed and approved the technical information contained in this news release.

About Doré Copper Mining Corp. 

Doré Copper Mining Corp. aims to be the next copper producer in Québec with an initial production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized 2,700 tonnes per day mill. The Corporation is expected to deliver a PEA by mid-Q2 2022 and then initiate a feasibility study and permit applications. 

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold 3. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Corporation’s Copper Rand Mill. 

For further information, please contact:

Ernest Mast 
President and Chief Executive Officer
Phone: (416) 792-2229
Email:  

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email: 

For more information, please visit: www.dorecopper.com 

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

  • Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements 

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking statements in this press release include, but are not limited to the Corporation and its JV partner Argonaut Gold Inc.  planning a drilling program to test the strike and depth extension of both deposits; aiming to be the next copper producer in Québec with an initial production target of +50 Mlbs of copper equivalent annually; PEA by mid-Q2 2022; implementing a hub-and spoke operation model; and initiating a feasibility study and permit applications after the PEA.

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Doré Copper reports more high-grade copper results from 2021 drilling program at its flagship Corner Bay copper-gold project 

   Download PDF   English   |   French   |   GERMAN

Toronto, Ontario – March 10, 2022 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) announces additional high-grade copper results from the remaining holes of its 2021 drilling campaign at its flagship Corner Bay property, located in the Chibougamau mining camp, approximately 40 kilometers by road from Chibougamau, Québec. 

The 2021 drilling program totaled 41,063 meters in 43 holes (including wedge holes). Doré Copper is reporting today the results from five of the remaining six holes of the program, which are further confirming the expansion of the deposit. These latest results will be included into an updated Mineral Resource estimate for Corner Bay for the preliminary economic assessment (“PEA”) anticipated at the end of the first quarter of 2022. 

High-Grade Drilling Highlights

Main Vein above dyke (Figure 1)

  • 6.2 meters of 5.77% Cu, 0.51 g/t Au, 32.2 g/t Ag, and 1,373 ppm Mo (hole CB-21-50) 
  • 2.1 meters of 8.85% Cu, 0.16 g/t Au, 52.1 g/t Ag (hole CB-21-58) 
  • 3.7 meters of 8.61% Cu, 0.16 g/t Au, 56.5 g/t Ag (hole CB-21-60) 

Ernest Mast, President and CEO of Doré Copper, commented, “We now have seven holes at the southern end of the upper part of the Main Vein with impressive high-grade copper intercepts that are exceeding the approximate 3% average copper grade of the deposit. Four of the seven holes are assaying greater than 8% copper. This very high-grade zone is now approximately 250 meters in length by 250 meters vertical and remains open down plunge. The addition of this zone and the recently announced zone connecting the Main Vein below the dyke to the Lower Deep Lens is expected to add at least 1 million tonne to the current high-grade mineral resources. Our 2022 infill drilling program of 45,000 meters at Corner Bay is underway with three rigs and is focusing on upgrading the Inferred Resource to Indicated Resource for the feasibility study that will commence after the completion of the PEA.”

Corner Bay Drilling Program 

In the Main Vein above the dyke, today’s results (see above highlights) and previously announced high-grade intercepts of 3.9 meters of 8.03% Cu, 0.86 g/t Au, 42.1 g/t Ag, and 1,109 ppm Mo (hole CB-21-55); 4.2 meters of 6.18% Cu, 0.12 g/t Au, and 26.6 g/t Ag (hole CB-21-57); 3.7 meters of 9.41% Cu, 2.84 g/t Au, 36.5 g/t Ag, and 890 ppm Mo (hole CB-21-52); and  2.0 meters of 3.34% Cu and 15.6 g/t Ag (hole CB-21-53) have defined a very high-grade copper zone of approximately 250 meters of strike length by 250 meters of vertical depth (Figure 1 and Table 1). This high-grade zone overlaps with the upper part of the Main Vein below the dyke and is still open down plunge.

Two holes (CB-21-59 and 61) were drilled approximately 500 to 600 meters west of the Corner Bay Main Vein and did not intersect any significant mineralization. Assays are pending for hole CB-21-48, which is the deepest hole that targeted the Main Vein below the dyke. The hole intersected approximately 60% chalcopyrite over 1 meter. 

The 2021 drilling program has successfully continued to expand the copper-gold mineralization at Corner Bay in three areas of the deposit (Figure 2), bringing the total strike length to over 1,100 metres.

Figure 1. Long section view of the Corner Bay Main Vein above the dyke. 

Figure 2. Isometric view of the entire Corner Bay deposit showing areas of expansion from drill results received since the October 2021 MRE. The diorite dyke bisects the deposit – Main Vein above and east of the dyke and Main Vein below and west of the dyke. 

Table 1. Corner Bay Drill Assays Highlights from the 2021 Drill Program

HoleFrom (m)To (m)Width1 (m)Cu (%)Au (g/t)Ag (g/t)Mo (ppm)Zone
CB-21-48Assays PendingMain Vein below dyke
CB-21-50667.3673.56.25.770.5132.21,373Main Vein above dyke
CB-21-58823.9826.02.18.850.1652.1188Main Vein above dyke
CB-21-59No significant mineralizationOutside the deposit 
CB-21-60759.5763.23.78.610.1656.5141Main Vein above dyke
CB-21-61No significant mineralizationOutside the deposit
The true width of the structures intersected is estimated at approximately 55-60% of the downhole width.

Corner Bay Deposit

In the Mineral Resource estimate of October 6, 2021, the Corner Bay deposit contains an Indicated Resource of 2.66 Mt at 2.68% Cu and 0.26 g/t Au containing 157 million pounds of copper and 22,000 ounces of gold and an Inferred Resource of 4.54 Mt at 3.20% Cu and 0.27 g/t Au containing 320 million pounds of copper and 39,000 ounces of gold,  based on a cut-off grade of 1.3% Cu and a copper price of US$3.75 per pound (refer to Technical Report dated November 10, 2021)2. 

The Corner Bay deposit is hosted by the intrusive Lac Doré Complex on the southern flank of the Chibougamau anticline. A regional north-northeastern diorite dyke also cuts the area. Several significant shear zones oriented north-south and northwest-southeast have been identified in the area. The Corner Bay area is characterized by copper porphyry style mineralization and by copper mineralization in shear zones commonly associated with dykes related to the Chibougamau Pluton. 

Drilling and Quality Control 

The Company is using Miikan Drilling as the drilling contractor. Miikan is a joint venture between Chibougamau Diamond Drilling Ltd., the First Nations community of Ouje-Bougoumou and the First Nations community of Mistissini both located in the Eeyou Istchee territory. 

Sample preparation and analysis were done at AGAT Laboratories in Mississauga, Ontario. Samples were weighed, dried, crushed to 75% passing 2 mm, split to 250 g, and pulverized to 85% passing 75 microns. Samples were then fire assayed for Au (50 g) and 4 acid digest ICP-OES finish for 43 elements.

QA/QC is done in house by Doré Copper Geologists with oversight from the Exploration Manager. The check samples (blanks and standards – 4% of total samples with another 2% of core duplicates) that were inserted into the sample batches are verified against their certified values and are deemed a pass if they are within 3 standard deviations of the certified value. The duplicates are evaluated against each other to determine mineralization distribution (nugget). If there are large discrepancies in the check samples, then the entire batch is requested to be re-assayed.

Andrey Rinta, P.Geo., the Exploration Manager of the Corporation and a “Qualified Person” within the meaning of National Instrument 43-101, has reviewed and approved the technical information contained in this news release.

About Doré Copper Mining Corp. 

Doré Copper Mining Corp. aims to be the next copper producer in Québec with an initial production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized 2,700 tonnes per day mill. The Corporation is expected to deliver a PEA at the end of the first quarter of 2022 and then initiate a feasibility study and permit applications. 

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold1. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Corporation’s Copper Rand Mill. 

For further information, please contact:

Ernest Mast 
President and Chief Executive Officer
Phone: (416) 792-2229
Email:  

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email: 

For more information, please visit: www.dorecopper.com 

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

  • Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).
  • The Technical Report on the Corner Bay-Devlin Property, Northwest Québec, Canada dated November 10, 2021 was prepared by Luke Evans, M.Sc., P.Eng. and Marie-Christine Gosselin, B.Sc., P.Geo., of SLR Consulting (Canada) Ltd., both “Independent Qualified Persons” as defined by NI 43-101. 

Cautionary Note Regarding Forward-Looking Statements 

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking statements in this press release include, but are not limited to adding at least 1 million tonne to the current high-grade mineral resources; 2022 drilling plans include approximately 45,000 meters of infill drilling at Corner Bay; aiming to be the next copper producer in Québec with an initial production target of +50 Mlbs of copper equivalent annually; PEA at the end of Q1 2022; implementing a hub-and spoke operation model; and initiating a feasibility study and permit applications after the PEA.

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Doré Copper reports more high-grade copper results from expansion drilling at its Corner Bay copper-gold project

   Download PDF   English   |   French   |   GERMAN

Toronto, Ontario – February 8, 2022 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce additional high-grade copper results from its completed 2021 drilling campaign at its flagship Corner Bay property, located in the Chibougamau mining camp, approximately 40 kilometers by road from Chibougamau, Québec. 

The 2021 drilling program totaled 41,063 meters in 43 holes (including wedge holes). Doré Copper is reporting today the results from five holes. The Corporation expects to receive assays for the remaining six holes of the program towards the end of February.

The drill results reported today have successfully expanded the copper-gold mineralization at Corner Bay in two areas of the deposit and will be incorporated, along with the results released on January 19, 2022 and the other pending results, into an updated Mineral Resource estimate for Corner Bay for the preliminary economic assessment (“PEA”) anticipated at the end of the first quarter of 2022. 

High-Grade Drilling Highlights

Main Vein above dyke (Figure 1)

  • 3.9 meters of 8.03% Cu, 0.86 g/t Au, 42.1 g/t Ag, and 1,109 ppm Mo (hole CB-21-55) 
  • 4.2 meters of 6.18% Cu, 0.12 g/t Au, and 26.6 g/t Ag (hole CB-21-57) – extends mineralization 250 meters downdip from intercept 3.7 meters of 9.41% Cu, 2.84 g/t Au, 36.5 g/t Ag, and 890 ppm Mo in hole CB-21-52 (previously reported)
  • Results pending from three other mineralized holes that will further expand the Main Vein above dyke along strike and at depth

Ernest Mast, President and CEO of Doré Copper, commented, “With these impressive high-grade copper intercepts, which are much higher than the approximate 3% average copper grade of the deposit, we have now defined a very high-grade zone of approximately 150 meters in length by 250 meters vertical within a key area of the deposit. The addition of this zone and the recently announced zone connecting the Main Vein below the dyke to the Lower Deep Lens is expected to add at least 1 million tonne to the current high-grade mineral resources and enhance our hub and spoke operation model with Corner Bay as its main mine. Our 2022 drilling program, already underway, includes approximately 45,000 meters of infill drilling at Corner Bay to upgrade the Inferred Resource to Indicated Resource for the feasibility study that will commence after the completion of the PEA at the end of Q1 2022.”

Corner Bay Drilling Program 

In the Main Vein above the dyke, today’s results from holes CB-21-53 (2.0 meters of 3.34% Cu and 15.6 g/t Ag), CB-21-55 (3.9 meters of 8.03% Cu, 0.86 g/t Au, 42.1 g/t Ag, and 1,109 ppm Mo), CB-21-57 (4.2 meters of 6.18% Cu, 0.12 g/t Au, and 26.6 g/t Ag) in combination with hole CB-21-52 (previously announced, 3.7 meters of 9.41% Cu, 2.84 g/t Au, 36.5 g/t Ag, and 890 ppm Mo) have defined a very high-grade copper zone of approximately 150 meters of strike length by 250 meters of vertical depth (Figure 1 and Table 1). This high-grade zone overlaps with the upper part of the Main Vein below the dyke and is still open down plunge.

In addition, holes CB-21-54 and CB-21-56 further confirmed that the mineralized area between the Main Vein below the dyke and the Deep Main Lens is continuous (Figure 2 and Table 1). This is another new area of 200 meters of strike length and approximately 300 meters of vertical extension that will be included the Mineral Resource update for the PEA. 

Figure 1. Long section view of the Corner Bay Main Vein above the dyke. 

Figure 2. Long section view of the Corner Bay Main Vein below the dyke.  

The 2021 drilling program has successfully continued to expand the copper-gold mineralization at Corner Bay in three areas of the deposit (Figure 3), bringing the total strike length to over 1,100 metres. 

Figure 3. Isometric view of the entire Corner Bay deposit showing areas of expansion from drill results received since the October 2021 MRE. The diorite dyke bisects the deposit – Main Vein above and east of the dyke and Main Vein below and west of the dyke.  

Table 1. Corner Bay Drill Assays Highlights from the 2021 Drill Program

HoleFrom (m)To (m)Width1 (m)Cu (%)Au (g/t)Ag (g/t)Mo (ppm)Zone
CB-21-53768.3770.32.03.340.5615.6-Main Vein above dyke
CB-21-541,149.51,152.32.81.850.293.9614Between Main Vein and Deep Lens
CB-21-55673.7677.63.98.030.8642.11,109Main Vein above dyke
CB-21-561,294.01,297.03.02.100.10--Between Main Vein and Deep Lens
CB-21-57720.0724.24.26.180.1226.6271Main Vein above dyke
Drill Assays Highlights released on January 19, 2022
CB-21-471,230.01,237.357.355.080.278.6182Between Main Vein and Deep Lens
Including1,230.01,234.14.16.060.2310.6189“
CB-21-52598.9602.63.79.412.8436.5890Main Vein above dyke
The true width of the structures intersected is estimated at approximately 60-75% of the downhole width.

Corner Bay Deposit

In the Mineral Resource estimate of October 6, 2021, the Corner Bay deposit contains an Indicated Resource of 2.66 Mt at 2.68% Cu and 0.26 g/t Au containing 157 million pounds of copper and 22,000 ounces of gold and an Inferred Resource of 4.54 Mt at 3.20% Cu and 0.27 g/t Au containing 320 million pounds of copper and 39,000 ounces of gold,  based on a cut-off grade of 1.3% Cu and a copper price of US$3.75 per pound (refer to Technical Report dated November 10, 2021)2. 

The Corner Bay deposit is hosted by the intrusive Lac Doré Complex on the southern flank of the Chibougamau anticline. A regional north-northeastern diorite dyke also cuts the area. Several significant shear zones oriented north-south and northwest-southeast have been identified in the area. The Corner Bay area is characterized by copper porphyry style mineralization and by copper mineralization in shear zones commonly associated with dykes related to the Chibougamau Pluton. 

Drilling and Quality Control 

The Company is using Miikan Drilling as the drilling contractor. Miikan is a joint venture between Chibougamau Diamond Drilling Ltd., the First Nations community of Ouje-Bougoumou and the First Nations community of Mistissini both located in the Eeyou Istchee territory. 

Sample preparation was done at SGS Canada Inc. in Val-d’Or, Québec, and fire assay and ICP analysis was done at SGS Canada Inc. in Burnaby, B.C. Samples were weighed, dried, crushed to 75% passing 2 mm, split to 250 g, and pulverized to 85% passing 75 microns. Samples were then fire assayed for Au (50 g) and sodium peroxide fusion ICP-MS finish for 34 elements.

QA/QC is done in house by Doré Copper Geologists with oversight from the Exploration Manager. The check samples (blanks and standards – 4% of total samples with another 2% of core duplicates) that were inserted into the sample batches are verified against their certified values and are deemed a pass if they are within 3 standard deviations of the certified value. The duplicates are evaluated against each other to determine mineralization distribution (nugget). If there are large discrepancies in the check samples, then the entire batch is requested to be re-assayed.

Andrey Rinta, P.Geo., the Exploration Manager of the Corporation and a “Qualified Person” within the meaning of National Instrument 43-101, has reviewed and approved the technical information contained in this news release.

About Doré Copper Mining Corp. 

Doré Copper Mining Corp. aims to be the next copper producer in Québec with a production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized 2,700 tonnes per day mill. The Corporation is expected to deliver a PEA at the end of the first quarter of 2022 and then initiate a feasibility study and permit applications. 

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold1. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Corporation’s Copper Rand Mill. 

For further information, please contact:

Ernest Mast 
President and Chief Executive Officer
Phone: (416) 792-2229
Email:  

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email: 

For more information, please visit: www.dorecopper.com 

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

  • Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).
  • The Technical Report on the Corner Bay-Devlin Property, Northwest Québec, Canada dated November 10, 2021 was prepared by Luke Evans, M.Sc., P.Eng. and Marie-Christine Gosselin, B.Sc., P.Geo., of SLR Consulting (Canada) Ltd., both “Independent Qualified Persons” as defined by NI 43-101. 

Cautionary Note Regarding Forward-Looking Statements 

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking statements in this press release include, but are not limited to, expecting to receive assays for the remaining six holes of the program towards the end of February; adding at least 1 million tonne to the current high-grade mineral resources;2022 drilling plans include approximately 45,000 meters of infill drilling at Corner Bay; PEA at the end of Q1 2022; implementing a hub-and spoke operation model; and initiating a feasibility study and permit applications after the PEA.

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Doré Copper announces 2022 drilling program at flagship Corner Bay and Devlin projects

   Download PDF   English   |   French

Toronto, Ontario – January 25, 2022 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce the approval of a fully funded 50,000 meter drilling program at the Corner Bay and Devlin projects that will mainly focus on resource category conversion and test a number of exploration targets on the property. The projects are located in the Chibougamau mining camp, less than 55 kilometers by road from the Corporation’s Copper Rand mill, near Chibougamau, Québec. 

“We have started a 45,000 meter drilling program at our flagship Corner Bay project with two drills, both infilling the deposit at a 60 meter spacing. A third drill is expected to arrive in early February. In addition, there will be an infill drilling program of approximately 5,000 meters at the nearby Devlin project,” stated Ernest Mast, President and CEO of Doré Copper. “We expect to have an excellent resource conversion rate from the Inferred to Indicated category. Some holes will be twinned for metallurgical test work. The results of this drilling program will form the basis of a feasibility study to implement our hub-and-spoke operation model.” 

2022 Drilling Program and Exploration Activities

The 2022 infill drilling program includes 45,000 meters at the high-grade Corner Bay copper-gold deposit and 5,000 meters at the Devlin copper deposit, located 10 kilometres west of Corner Bay. 

The objective of this $7.0 million drilling program is to convert a significant proportion of the underground Inferred resources to the Indicated category. This program will enable the finalization of the underground engineering plans as part of the feasibility study that will start after the PEA is completed at the end of the first quarter of 2022. Drilling will also aim at extending some known copper mineralized zones at Corner Bay.

At Corner Bay, step out holes are planned to test a moderate to strong downhole geophysical target to the south of the East Vein, located 200 meters east of the Main Vein. 

A ground geophysical EM survey is planned southwest of the Corner Bay deposit over a one kilometer square area with similar magnetic signature, structural setting and lithology to Corner Bay.

Doré Copper finished 2021 with approximately $14.1 million in working capital, of which approximately $5 million is flow-through funds. 

Qualified Person

Andrey Rinta, P.Geo., the Exploration Manager of the Corporation and a “Qualified Person” within the meaning of National Instrument 43-101, has reviewed and approved the technical information contained in this news release.

COVID-19 Precautions 

Doré Copper has implemented precautions and procedures compliant with Québec’s health guidelines. Strict protocols are in place to ensure the safety of all staff, thereby reducing the potential for community contact and spreading of the virus.


About Doré Copper Mining Corp. 

Doré Copper Mining Corp. aims to be the next copper producer in Québec with a production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized 2,700 tonnes per day mill. The Corporation is expected to deliver a PEA at the end of the first quarter of 2022 and then initiate a feasibility study and permit applications. 

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold1. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Corporation’s Copper Rand Mill. 

For further information, please contact:

Ernest Mast 
President and Chief Executive Officer
Phone: (416) 792-2229
Email:  

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email: 

For more information, please visit: www.dorecopper.com 

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

1. Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements 

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking statements in this press release include, but are not limited to, a third drill expected to arrive in early February, having an excellent resource conversion rate from the Inferred to Indicated category, planning step out holes to test a geophysical target located to the south of the East Vein, planning a ground geophysical EM survey southwest of the Corner Bay deposit over a one kilometer square area, completing preliminary economic assessment (PEA) by the end of the first quarter of 2022, aiming to be the next copper producer in Québec with a production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model, and initiating a feasibility study and permit applications after the PEA.

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Doré Copper intersects 3.7 meters at 9.41% copper, 2.84 g/t gold and 36.5 g/t silver at Corner Bay – continues to expand deposit

   Download PDF   English   |   French   |   GERMAN

Toronto, Ontario – January 19, 2022 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce additional results from its 2021 drilling campaign at its flagship Corner Bay property, located in the Chibougamau mining camp, approximately 40 kilometers by road from Chibougamau, Québec. 

In 2021, Doré Copper completed 43 holes (including wedge holes) totaling 41,063 meters and is reporting today the results from 13 holes. The assay results for the remaining 11 holes are pending. Prior results were incorporated into the Mineral Resource Estimate announced on October 6, 2021. 

These latest drill results have further expanded the deposit in three areas and will be incorporated, with other pending results, into an updated Mineral Resource estimate of the Corner Bay deposit for the preliminary economic assessment (“PEA”) anticipated at the end of the first quarter of 2022. 

Drilling Highlights

Main Vein below dyke (Figure 1)

  • Main Vein below dyke connected to Lower Deep Lens with five holes, including CB-21-45 with 3.8 meters of 2.97% Cu, 0.45 g/t Au and 4.4 g/t Ag, CB-21-47 with 7.35 meters of 5.08% Cu, 0.27 g/t Au and 8.65 g/t Ag and CB-21-49 with 7.1 meters of 3.24% Cu and 0.23 g/t Au – Two other mineralized holes with assays pending
  • Main Vein below dyke further extended at southern end with two holes

Main Vein above dyke (Figure 2)

  • CB-21-52: 3.7 meters of 9.41% Cu, 2.84 g/t Au and 36.5 g/t Ag – Extending Main Vein above dyke along strike.
  • Results pending for four other mineralized holes that will further expand the zone along strike and at depth 

“We are continuing to have success in expanding the Corner Bay deposit. These positive drill results from three different areas of the deposit, as well as pending assays from the remaining of the 2021 drilling program, are expected to further increase the mineral resources that will be reported in the upcoming PEA” stated Ernest Mast, President and CEO of Doré Copper. “The connection of the Main Vein above the dyke with the Lower Deep Lens is very significant. In addition, the intercept in hole CB-21-52 is the highest copper equivalent grade recorded in the history of the deposit. Our 2022 drilling plans include approximately 40,000 meters of infill drilling at Corner Bay to upgrade the Inferred Resource to Indicated Resource for the feasibility study that will commence after the completion of the PEA at the end of Q1 2022. 

Corner Bay Drilling Program 

The results reported today from the 2021 drilling program have successfully continued to expand the copper-gold mineralization at Corner Bay in three areas of the deposit (Figure 3), bringing the total strike length to over 1,100 metres. Of significance, the intercepts in holes CB-21-44, CB-21-45, CB-21-47, CB-21-49 and CB-21-51 have effectively connected the Main Vein below the dyke to the Lower Deep Lens (Figure 1 and Table 1). Two additional holes with assays pending have intersected copper mineralization. These seven holes cover approximately 200 meters of strike length and 250 meters of vertical depth. 

In addition, CB-21-39, CB-21-41 and CB-21-42 have expanded the Main Vein below the dyke to the south by approximately 100 meters (at certain elevations) from the October 2021 Mineral Resource Estimate (Figure 1). The other holes (CB-21-39W1, CB-21-40, CB-21-43 and CB-21-46) drilled at the southern limit of the Main Vein below the dyke did not intersect any significant mineralization and have limited the southern extension of the Main Vein. 

Hole CB-21-52 intercepted 3.7 meters of 9.41% Cu, 2.84 g/t Au, 36.5 g/t Ag and 890 ppm Mo (molybdenum) (Figure 2 and Table 1). This hole has expanded the Main Vein above the dyke along strike to the south by approximately 50 meters. This intercept is the highest copper equivalent grade recorded in the history of the deposit.

The Corporation continues to obtain high molybdenum values in the intersections reported e.g. 682 ppm in hole CB-21-45, 582 ppm in hole CB-21-49, and 890 ppm in hole CB-21-52. Over the course of 2022, Doré Copper plans to initiate molybdenum recovery test work as part of the feasibility study. 


Figure 1. Long section view of the Corner Bay Main Vein below the dyke (blue horizontal line indicates vertical depth of 880 meters). 


Figure 2. Long section view of the Corner Bay Main Vein above the dyke. 


Figure 3. Isometric view of the entire Corner Bay deposit. The diorite dyke bisects the deposit – Main Vein above and east of the dyke and Main Vein below and west of the dyke. 

Table 1. Corner Bay Property Drill Assays Highlights from the 2021 Drill Program

HoleFrom (m)To (m)Width1 (m)Cu (%)Au (g/t)Ag (g/t)Mo (ppm)Zone
CB-21-391,175.551,177.62.052.040.2417.1-Main Vein below dyke (south) 
CB-21-39W1No significant mineralizationMain Vein below dyke (south) 
CB-21-40No significant mineralizationMain Vein below dyke (south) 
CB-21-41967.6971.13.52.660.4016.6195Main Vein below dyke (south)
CB-21-421,045.01,048.03.02.710.1822.3-Main Vein below dyke (south)
CB-21-43No significant mineralizationMain Vein below dyke (south)
CB-21-441,191.61,193.752.152.420.464.3322Between Main Vein and Deep Lens
CB-21-451,157.21,161.03.82.970.454.4682Between Main Vein and Deep Lens
CB-21-46No significant mineralizationMain Vein below dyke (south)
CB-21-47 Including1,230.01,237.357.355.080.278.6182Between Main Vein and Deep Lens

1,230.01,234.14.16.060.2310.6189“
CB-21-49 including1,122.31,128.47.13.240.23-582Between Main Vein and Deep Lens

1,124.91,128.43.54.280.28-682“
CB-21-51 including1,141.51,146.95.42.240.10-142Between Main Vein and Deep Lens

1,144.01,146.92.93.440.17-262“
CB-21-52598.9602.63.79.412.8436.5890Main Vein above dyke
1. The true width of the structures intersected is estimated at approximately 60-75% of the downhole width

Corner Bay Deposit

In the Mineral Resource estimate of October 6, 2021, the Corner Bay deposit contains an Indicated Resource of 2.66 Mt at 2.68% Cu and 0.26 g/t Au containing 157 million pounds of copper and 22,000 ounces of gold and an Inferred Resource of 4.54 Mt at 3.20% Cu and 0.27 g/t Au containing 320 million pounds of copper and 39,000 ounces of gold,  based on a cut-off grade of 1.3% Cu and a copper price of US$3.75 per pound (refer to Technical Report dated November 10, 2021)2. 

The Corner Bay deposit is hosted by the intrusive Lac Doré Complex on the southern flank of the Chibougamau anticline. A regional north-northeastern diorite dyke also cuts the area. Several significant shear zones oriented north-south and northwest-southeast have been identified in the area. The Corner Bay area is characterized by copper porphyry style mineralization and by copper mineralization in shear zones commonly associated with dykes related to the Chibougamau Pluton. 

Drilling and Quality Control 

The Company is using Miiken Drilling as the drilling contractor. Miiken is a joint venture between Chibougamau Diamond Drilling Ltd., the First Nations community of Ouje-Bougoumou and the First Nations community of Mistissini both located in the Eeyou Istchee territory. 

Sample preparation was done at SGS Canada Inc. in Val-d’Or, Québec, and fire assay and ICP analysis was done at SGS Canada Inc. in Burnaby, B.C. Samples were weighed, dried, crushed to 75% passing 2 mm, split to 250 g, and pulverized to 85% passing 75 microns. Samples were then fire assayed for Au (50 g) and sodium peroxide fusion ICP-MS finish for 34 elements.

QA/QC is done in house by Doré Copper Geologists with oversight from the Exploration Manager. The check samples (blanks and standards – 4% of total samples with another 2% of core duplicates) that were inserted into the sample batches are verified against their certified values and are deemed a pass if they are within 3 standard deviations of the certified value. The duplicates are evaluated against each other to determine mineralization distribution (nugget). If there are large discrepancies in the check samples, then the entire batch is requested to be re-assayed.

Andrey Rinta, P.Geo., the Exploration Manager of the Corporation and a “Qualified Person” within the meaning of National Instrument 43-101, has reviewed and approved the technical information contained in this news release.

About Doré Copper Mining Corp. 

Doré Copper Mining Corp. aims to be the next copper producer in Québec with a production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized 2,700 tonnes per day mill. The Corporation is expected to deliver a PEA at the end of the first quarter of 2022 and then initiate a feasibility study and permit applications. 

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold1. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Corporation’s Copper Rand Mill. 

For further information, please contact:

Ernest Mast 
President and Chief Executive Officer
Phone: (416) 792-2229
Email:  

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email: 

For more information, please visit: www.dorecopper.com 

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

  • Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Dore/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).
  • The Technical Report on the Corner Bay-Devlin Property, Northwest Québec, Canada dated November 10, 2021 was prepared by Luke Evans, M.Sc., P.Eng. and Marie-Christine Gosselin, B.Sc., P.Geo., of SLR Consulting (Canada) Ltd., both “Independent Qualified Persons” as defined by NI 43-101. 

Cautionary Note Regarding Forward-Looking Statements 

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking statements in this press release include, but are not limited to, four other mineralized holes in the Main Vein above dyke with assays pending to further expand the zone along strike and at depth; positive drill results from three different areas of the deposit, as well as pending assays from the remaining of the 2021 drilling program, expected to further increase the mineral resources that will be reported in the upcoming PEA; 2022 drilling plans include approximately 40,000 meters of infill drilling at Corner Bay; PEA at the end of Q1 2022; 2022 plans to initiate molybdenum recovery test work as part of the feasibility study; implementing a hub-and spoke operation model; and initiating a feasibility study and permit applications after the PEA.

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Doré Copper Announces Appointment of Vice President Exploration

   Download PDF   English   |   French

TORONTO, Jan. 17, 2022 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper”) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce the appointment of Mr. Sylvain Lépine, M.Sc., P. Geo., as Vice President Exploration of the Corporation, effective immediately.

Mr. Lépine has more than 15 years of experience in the mining industry, predominantly in gold and base metals in Québec. He joined Yorbeau Resources Inc. in 2015 and was appointed Vice President Exploration in 2020. Prior, he served as Vice President Exploration of Cogitore Resources Inc. from 2013 to 2015. Mr. Lépine was President of the Rouyn-Noranda chapter of the Canadian Institute of Mining, Metallurgy and Petroleum (CIM) from 2013 to 2019. In 2009, he was part of a team at Cogitore Resources that was awarded the Prospector of the Year Award from the Québec Mineral Exploration Association for the Scott Lake copper-zinc discovery. He is a professional geologist and a member of the Ordre des géologues du Québec.  He holds a Bachelor of Science degree in Geological Resources and a Master of Science degree in Earth Sciences from the Université du Québec à Montréal.

“We welcome Sylvain to Doré Copper to the newly created position of Vice President Exploration,” stated Ernest Mast, President and CEO of Doré Copper, “His extensive experience in the Chibougamau area and the Abitibi region of Québec will be instrumental to our strategy of advancing the Corporation’s assets.”

Doré Copper has granted Mr. Lépine an aggregate of 67,500 incentive stock options (the “Options”) having an exercise price of $0.70 per share. The Options can be exercised for a period of five years from the date of grant and are subject to the policies of the TSX Venture Exchange.

About Doré Copper Mining Corp.

Doré Copper Mining Corp. aims to be the next copper producer in Québec with a production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized 2,700 tonnes per day mill. The Corporation is expected to deliver a PEA by the end of the first quarter of 2022 and then initiate a feasibility study and permit applications.

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold1. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Corporation’s Copper Rand Mill.

For further information, please contact:

Ernest Mast 
President and Chief Executive Officer
Phone: (416) 792-2229
Email:  

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email: 

For more information, please visit: www.dorecopper.com 

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

1. Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Doré/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements
This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking statements in this press release include, but are not limited to, have the preliminary economic assessment (PEA) completed by the end of the first quarter of 2022, aiming to be the next copper producer in Québec with a production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model, and initiating a feasibility study and permit applications after the PEA.

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Doré Copper announces positive ore sorting test for Corner Bay mineralized material

   Download PDF   English   |   French   |   GERMAN

Toronto, Ontario – December 16, 2021 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce positive results from recent sample test work aimed at determining the effectiveness of utilizing ore sorting technology to improve the processed grade and reduce the mill feed tonnage for its flagship Corner Bay high-grade copper-gold project located approximately 55 kilometers by road from the Corporation’s Copper Rand mill, near Chibougamau, Québec. 

Highlights of Ore Sorting Test

  • Sample taken from the development mineralized material stockpiled at surface which was extracted during the preparation of the 2008 bulk sample
  • Results indicate that the grade of the pre-concentrate tested with the ore sorter increased 2.6x, from 2.66% Cu to 6.84% Cu, with a recovery of 95.5% Cu by utilizing an X-ray transmission (XRT) sensor at Corem’s test facility in Québec City
  • Reject material contained 62.8% of the initial mass and had a copper grade of 0.19%
  • In practice, a higher recovery would be expected as fine materials from the mining and crushing operations would join the ore sorter pre-concentrate 
  • Corner Bay mineralization is amenable to sorting and would have the following cost and environmental benefits: 
    • Decrease in transportation costs and greenhouse gas emissions (GHGs) due to a reduction of transported material from mine to mill
    • Decrease energy consumption at the mill due to the higher feed grade and hardness decrease of the feed material (lower Bond Work Index of the sorter pre-concentrate product compared to the feed)
    • Reduce production of fine tailings
    • Increase capacity of the mill to treat additional materials

Commenting on the results of our first sorting tests, Ernest Mast, President & CEO, stated, “This initial sorting test is very positive, indicating that the grade of Corner Bay can be significantly upgraded. The upcoming PEA will include a trade-off study on the integration of ore sorting technology for Corner Bay and its potential economic benefits. Based on the historical sorting test work and the nature of the mineralization at the Devlin deposit, our secondary hub-and-spoke asset, we expect that ore sorting could also be successful there. Future development work will include additional ore sorting tests in different areas of the deposits.” 

“As the implementation of ore sorting opens up new alternatives for the mill that require additional analysis, the Company is now planning to have the preliminary economic assessment (PEA) completed by the end of the first quarter of 2022. In addition, it will incorporate an updated mineral resource for Corner Bay which will include positive drill results that now connect the area between the Main Zone (below the dyke) and the Lower Deep Vein. We expect to have all the assay results in January. This area is expected to add significant tonnage as it is now considered waste in the current resource.” 

Ore Sorting Tests

Corem was commissioned to undertake test work at their facility in Québec City to establish the amenability of the Corner Bay mineralized material to ore sorting using an XRT sensor. 

A representative bulk sample was prepared by Doré Copper by selecting rocks from the development mineralized material stockpiled at surface from the project site. The material was selected to represent different rock types: semi and massive sulphides, shear zone, diorite dyke and anorthosite. At Corem’s facility, each rock type was crushed to less than 1 ½ inches (38 millimeters or mm) and screened at ¾ inch (19 mm). The fractions between 1 ½ inches and ¾ inches of each rock type were blended in different proportion to compose a representative bulk sample prior sorting. An industrial 1 m belt width COMEX OCXR-1000 integrated X-ray and optical sorting system was used and only the dual energy X-ray transmission (DE-XRT) sensor was used for the testing. 

The ore sorting process helps concentrate the metals of commercial interest, which were principally associated with high density sulphide minerals. During this process, rocks were individually scanned, and low grade (low density) waste material is selectively diverted away from downstream processing. As a first step, the XRT sensor was calibrated with 100 different rocks representing all rock types and a calibration algorithm was developed for the Corner Bay material. A continuous production run was done on a 95 kg sample. The testing was done with three passes where the reject material from each pass was re-processed by the sorter. This methodology allowed to vary a large range of operating conditions and to establish a grade-recovery curve, useful to evaluate different separation scenarios. 

The sum of the three pre-concentrates represented 37.2% of the feed mass at a grade of 6.84% Cu and resulted in a cumulative copper recovery of 95.5%. The final reject portion represented 62.8% of the initial mass at a grade of 0.19% Cu representing 4.5% of the copper fed in the sorter. Fines from the crushing operation, grading 3.26% Cu, were not included in the ore sorting test. Some fines were generated, but as the rock types were crushed separately the crushing proportions were not considered for calculations. Therefore, in an operating application where the fine material fraction would join the pre-concentrate, the final pre-concentrate grade would be lower and the recovery would be higher than indicated by this test. 

Potential Benefits of Ore Sorting

Sorting of the run-of-mine (ROM) material has the potential to reduce operating costs for milling, flotation and tailings management since it corresponds to a significant rejection of low-grade material.  Sorting could decrease the hardness of the ore sent to the mill, and so, non-negligeable energy savings could be foreseen. The Bond Work Index (Wi) of the ore sorter pre-concentrate was determined to be 11.0 kWh/t by Corem. This is 20% less than the historical Wi of 13.7 kWh/t for the Corner Bay ore. The commensurate increase in the head grade of the ore reporting to the flotation circuit has the potential to also result in improved metallurgical recoveries in the flotation circuit and higher concentrate grades.

Additionally, it is anticipated that potential savings in capital costs related to the smaller milling and flotation circuit would partially offset the costs associated with the ore sorter or provide capacity to treat additional material from other deposits in the region in the Copper Rand mill. 

Based on the success of this first test, an ore sorting trade-off study will be integrated into the Company’s upcoming PEA.

Qualified Persons

Ernest Mast, P.Eng., President and CEO of the Corporation and a “Qualified Person” within the meaning of National Instrument 43-101, has reviewed and approved the technical information contained in this news release.

About Corem

Corem is a center of expertise and innovation in mineral processing with the largest concentration of resources dedicated to research and development in this field in Canada. Corem is a not-profit organization that works closely with its members, its clients, and its partners to improve competitiveness and to reduce environmental impact through the industrialization of innovative solutions. Corem has extensive equipment and infrastructure, including a pilot plant and laboratories for grinding, physical separation (gravimetric and magnetic), flotation, extractive metallurgy, hydrometallurgy, pelletizing, thermal treatment processes as well as mineralogical characterization. For more information, please visit: corem.qc.ca

About Doré Copper Mining Corp. 

Doré Copper Mining Corp. aims to be the next copper producer in Québec with a production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model with multiple high-grade copper-gold assets feeding its centralized 2,700 tonnes per day mill. The Corporation is expected to deliver a PEA by the end of the first quarter of 2022 and then initiate a feasibility study and permit applications. 

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold1. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Corporation’s Copper Rand Mill. 

For further information, please contact:

Ernest Mast 
President and Chief Executive Officer
Phone: (416) 792-2229
Email:  

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email: 

For more information, please visit: www.dorecopper.com 

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

1. Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Doré/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking statements in this press release include, but are not limited to, higher copper recovery would be expected as fine materials from the mining and crushing operations would join the ore sorter pre-concentrate; expectations that ore sorting could also be successful at Devlin; future development work will include additional ore sorting tests in different areas of the deposits; planning to have the preliminary economic assessment (PEA) completed by the end of the first quarter of 2022; incorporating an updated mineral resource for Corner Bay; expecting to have all drill results in January; area between the Main Zone (below the dyke) and the Lower Deep Vein expected to add significant tonnage; potential to reduce operating and capital costs with ore sorting technology; aiming to be the next copper producer in Québec with a production target of +50 Mlbs of copper equivalent annually by implementing a hub-and spoke operation model; initiating a feasibility study and permit applications after the PEA.

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Doré Copper engages Independent Trading Group as its market-maker

   Download PDF   English   |   French

Toronto, Ontario – December 1, 2021 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) today announced it has entered into a market-making agreement (the “Agreement”) with Independent Trading Group (“ITG“) pursuant to which ITG has agreed to provide market-making services to the Corporation in accordance with the policies of the TSX Venture Exchange and applicable laws.

Under the terms of the Agreement, which is effective December 1, 2021, Doré Copper will pay the Market Maker a monthly fee of $5,000 for market making services for a minimum term of three months, which will continue until either party has terminated the agreement with thirty (30) days’ notice. ITG will not receive shares or other securities as compensation.  The capital used for market making will be provided by ITG.

About Doré Copper Mining Corp. 

Doré Copper Mining Corp. is a copper-gold explorer and developer in the Chibougamau area of Québec, Canada. The Corporation is focussed on implementing its hub-and-spoke development strategy by advancing its key high-grade copper-gold brownfield projects towards a restart of operations. Our goal is to achieve an annual production of 60 Mlbs of copper equivalent (or 100,000 oz gold equivalent).

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold1. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Company’s 2,700 tpd mill (Copper Rand Mill). 

Doré Copper plans to deliver a PEA of its hub-and-spoke model in January 2022. The Corporation is completing its 2021 drilling program of 50,000 meters on its properties in the Lac Doré and Chibougamau area of Québec. 

For further information, please contact:

Ernest Mast 
President and Chief Executive Officer
Phone: (416) 792-2229
Email:  

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email: 

For more information, please visit: www.dorecopper.com 

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

1. Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Doré/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking statements in this press release include, but are not limited to, completing a PEA in January 2022, increasing the Corner Bay resource base to above the existing 7.2 million tonnes, implementing a hub-and-spoke development strategy by advancing the Corporation’s key high-grade copper-gold brownfield projects towards a restart of operations, and the Corporation’s goal of achieving an annual production of 60 M lbs of copper equivalent (or 100,000 oz gold equivalent).

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Doré Copper files technical report for Corner Bay and Devlin projects

   Download PDF   English   |   French

Toronto, Ontario – November 22, 2021 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce that further to its news releases dated October 6 and October 14, 2021, it has filed a technical report in compliance with National Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43-101”) on the Company’s Corner Bay and Devlin copper projects.

A copy of the technical report (Technical Report on the Corner Bay-Devlin Property, Northwest Québec, Canada dated November 10, 2021) is available on the Company’s profile on SEDAR at www.sedar.com  and on the Company’s website at https://www.dorecopper.com. The Technical Report focuses on an updated mineral resource estimate for both the Corner Bay and Devlin projects located on the same property, south of the Chibougamau mining camp in northern Québec. The report was prepared by SLR Consulting (Canada) Ltd., an independent global mining advisory and consulting firm.

Ernest Mast, President and Chief Executive Officer of the Corporation, commented: “Work is progressing on the preliminary economic assessment (PEA) which will evaluate a hub-and-spoke operation model that will include our flagship high-grade copper-gold Corner Bay deposit, along with the Devlin (copper-gold) and Joe Mann (gold-copper) deposits to supplement tonnage. The PEA is expected to be completed in January 2022. Meanwhile, our drilling activities are continuing at Corner Bay to further increase our resource base above the existing 7.2 million tonnes.”

Qualified Persons

The Technical Report the Corner Bay-Devlin Property was prepared by Luke Evans, M.Sc., P.Eng. and Marie-Christine Gosselin, B.Sc., P.Geo., of SLR, both “Independent Qualified Persons” as defined by NI 43-101. 

Andrey Rinta, P.Geo., the Exploration Manager of the Corporation and a “Qualified Person” within the meaning of National Instrument 43-101, has reviewed and approved the technical information contained in this news release.

About Doré Copper Mining Corp. 

Doré Copper Mining Corp. is a copper-gold explorer and developer in the Chibougamau area of Québec, Canada. The Corporation is focussed on implementing its hub-and-spoke development strategy by advancing its key high-grade copper-gold brownfield projects towards a restart of operations. Our goal is to achieve an annual production of 60 Mlbs of copper equivalent (or 100,000 oz gold equivalent).

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold1. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Company’s 2,700 tpd mill (Copper Rand Mill). 

Doré Copper plans to deliver a PEA of its hub-and-spoke model in January 2022. The Corporation is completing its 2021 drilling program of 50,000 meters on its properties in the Lac Doré and Chibougamau area of Québec. 

For further information, please contact:

Ernest Mast 
President and Chief Executive Officer
Phone: (416) 792-2229
Email:  

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email: 

For more information, please visit: www.dorecopper.com 

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

1. Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Doré/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Cautionary Note Regarding Forward-Looking Statements

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking statements in this press release include, but are not limited to, completing a PEA in January 2022, increasing the Corner Bay resource base to above the existing 7.2 million tonnes, implementing a hub-and-spoke development strategy by advancing the Corporation’s key high-grade copper-gold brownfield projects towards a restart of operations, and the Corporation’s goal of achieving an annual production of 60 M lbs of copper equivalent (or 100,000 oz gold equivalent).

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

Doré Copper announces mineral resource update for Devlin – Preliminary Economic Assessment underway

   Download PDF   English   |   French   |   GERMAN

Toronto, Ontario – October 14, 2021 – Doré Copper Mining Corp. (the “Corporation” or “Doré Copper“) (TSXV: DCMC; OTCQX: DRCMF; FRA: DCM) is pleased to announce an updated mineral resource estimate (“MRE”) for its Devlin copper project. The Devlin deposit is easily accessible, partially developed and located approximately 10 kilometers west of the Corporation’s flagship Corner Bay project and approximately 35 kilometers by road from the Corporation’s Copper Rand mill, near Chibougamau, Québec. 

The preliminary economic assessment (“PEA”) for the hub-and-spoke operation model, which includes the Corner Bay deposit as the main feed to the mill along with the Devlin deposit and the former Joe Mann mine as secondary feed sources, is expected to be completed by January 2022.

Highlights of the Devlin Updated MRE

  • Measured and Indicated Resource of 775,000 tonnes @ 2.17% Cu and Inferred Resource of 484,000 tonnes @ 1.79% Cu 
  • Contains 37 million pounds of copper in the Measured and Indicated categories and 19 million pounds of copper in the Inferred category
  • Flat-lying deposit less than 100 meters from surface
  • Infrastructure in place:
    • 305-meter decline access to a vertical depth of 70 meters 
    • Within trucking distance (35 kilometres) of the Corporation’s 2,700 tpd mill
  • Development plan contiguous with Corner Bay benefiting from operational synergies 
  • Included in the PEA anticipated in January 2022

Ernest Mast, President and CEO of Doré Copper, stated: “Our re-development plan for a hub-and-spoke operation model in the PEA includes our significant high-grade Corner Bay copper-gold project as the main feed to our centralized 2,700 tpd mill, supplemented by the Devlin and Joe Mann deposits. We plan to develop Devlin at the same time as our flagship Corner Bay deposit, which we believe will bring additional tonnes early in the mine life and have operational synergies with Corner Bay.”

The PEA will be using the MRE issued today for Devlin, the October 6, 2021 MRE for Corner Bay (refer to news release October 6, 2021) and the July 28, 2021 MRE for Joe Mann (Technical Report filed on September 10, 2021). A NI 43-101 technical report supporting the MREs for the Corner Bay and Devlin projects will be filed on SEDAR (www.sedar.com) prior to November 20, 2021.

Mineral Resource Estimate for Devlin 

The MRE for the Devlin deposit was completed by SLR Consulting (Canada) Ltd. (“SLR”) and is shown in Table 1.

Table 1. Devlin Mineral Resource Estimate (Effective date of October 7, 2021)

ClassificationTonnage (k t)Cu Grade (%)Au Grade (g/t)Cu Contained  (M lbs)Au Contained  (k oz)
Measured1212.740.297.31.1
Indicated6542.060.1929.74.0
M+I 7752.170.2037.05.1
Inferred4841.790.1719.22.7
Notes:
  • The stated Mineral Resources comply with the disclosure requirements of National Instrument 43-101 – Standards of Disclosure for Mineral Projects ("NI 43-101") and are classified in accordance with the Canadian Institute of Mining, Metallurgy and Petroleum's "CIM Definition Standards – For Mineral Resources and Mineral Reserves" (the “CIM Definition Standards”).
  • Mineral Resources are estimated at a cut-off grade of 1.2% Cu.
  • Mineral Resources are estimated using a long-term copper price of US$3.75 per pound, metallurgical copper recovery of 95%, and a US$/C$ exchange rate of 0.75.
  • A minimum mining height of 1.8 meters was used.
  • Bulk density of 2.90 g/cm3 was used for the Lower Zone and 2.85 g/cm3 for the Upper Zone.
  • Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability.
  • Numbers may not add due to rounding.

The MRE utilized a combination of historic holes drilled from 1974 to 1982 and more recent drilling by Nuinsco (CBay Minerals Inc.) from 2013-14. A total of 140 drill holes (out of 174) were used for this MRE with an aggregated length of 14,924 meters. No additional drilling was completed at Devlin since 2014 except for a few holes for metallurgical testing by Doré Copper during summer 2021. 

Mineral Resource Estimation Methodology 

SLR’s mineral resource update is based on the previous MRE, dated June 30, 2015, that was prepared by Pierre Desautels, P.Geo., of AGP Mining Consultants Inc. (“AGP”) using Gemcom GEMS Version 6.5 software. A block model was built by AGP based on 140 diamond drill holes that intersect the Lower Zone and Upper Zone wireframes (Figure 1). The mineralization wireframes were built by AGP based on a 1.8 meters minimum mining height. Assays were capped to 15% Cu and 2.5 g/t Au in the Lower Zone and were capped to 10% Cu and 1.5 g/t Au in the Upper Zone. Full intersect copper and gold composites were interpolated into 10 meters by 10 meters by 2.5 meters high partial blocks using a three pass, inverse distance squared (ID2) estimation approach.  AGP reported the resources base on a 1.6% Cu cut-off grade.  SLR reviewed and adopted the AGP block model after making modifications to the classification model whereby the Measured blocks were preserved and a portion of the Inferred blocks were upgraded to Indicated.  SLR’s MRE dated October 7, 2021 is based on a 1.2% Cu cut-off grade.

Figure 1. Isometric View of Devlin Showing the Upper and Lower Zones (Looking Northeast)

Devlin Copper Deposit

The Devlin deposit is a flat-lying (horizontal) magmatic massive sulphide deposit which is less than 100 meters from surface. The deposit is mainly hosted by a hydrothermal breccia. It is composed of a massive chalcopyrite-pyrite-quartz +/- carbonate vein which pinches and swells. Minor gold is present within the ore body with values typically less than 0.34 g/t. High grade intersections usually consist of one or several parallel quartz veins varying from a few centimeters to 1 meter in thickness, in which the occurrence of chalcopyrite may vary from occasional blebby specks to massive bands. As the mineralogy is very similar to the Corner Bay deposit, the Corporation expects no issues in comingling material from both projects. 

The Devlin deposit was drilled by Riocanex (1974-78) and Camchib Resources Inc. (1979-82). In 1981, a 305-meter access decline of 11 ft. x 15 ft. was driven at -15% to a vertical depth of 70 meters, intersecting mineralization at approximately 55 meters below surface. An additional 305 meters of exploration drifting was completed along the vein confirming the continuity and grade of the copper zone. A bulk sample totaling 2,744 short tons of development muck was processed at the Principale mill (dismantled). From an average head grade of 1.26% Cu, a copper concentrate grading 17.79% Cu was obtained with an overall copper recovery of 96.9%. In 1995, Holmer Gold (55% owner of the property) retains Watts Griffis and McOuat Limited (“WGM”) to prepare a technical review of the project. WGM developed a mine plan suggesting a room and pillar approach with a mining rate of 200 tons per day for a total annual production of 50,000 short tons over a mine life of four years. In 2004, Lake Shore Gold acquired Holmer Gold and the Devlin property. The Devlin property was acquired by CBay Minerals Inc. in 2013. CBay Minerals completed 1,749 meters of drilling in 17 holes from 2013-14. In 2015, CBay Minerals reported a NI 43-101 MRE and filed a Technical Report for the Devlin project. 

Qualified Persons

The MRE for Devlin was prepared by Luke Evans, M.Sc., P.Eng., ing, and Marie-Christine Gosselin, B.Sc., P.Geo., of SLR, both “Independent Qualified Persons” as defined by NI 43-101. The Qualified Persons are not aware of any environmental, permitting, legal, title, taxation, socio-economic, marketing, political, or other relevant factors that could materially affect the MREs.

Andrey Rinta, P.Geo., the Exploration Manager of the Corporation and a “Qualified Person” within the meaning of National Instrument 43-101, has reviewed and approved the technical information contained in this news release.

About Doré Copper Mining Corp. 

Doré Copper Mining Corp. is a copper-gold explorer and developer in the Chibougamau area of Québec, Canada. The Corporation is focussed on implementing its hub-and-spoke development strategy by advancing its key high-grade copper-gold brownfield projects towards a restart of operations. Our goal is to achieve an annual production of 60 Mlbs of copper equivalent (or 100,000 oz gold equivalent).

The Corporation has consolidated a large land package in the prolific Lac Doré/Chibougamau and Joe Mann mining camps that has produced 1.6 billion pounds of copper and 4.4 million ounces of gold1. The land package includes 13 former producing mines, deposits and resource target areas within a 60-kilometre radius of the Company’s 2,700 tpd mill (Copper Rand Mill). 

Doré Copper plans to deliver a PEA of its hub-and-spoke model in January 2022. The Corporation is completing its 2021 drilling program of 50,000 meters on its properties in the Lac Doré and Chibougamau area of Québec.  

For further information, please contact:

Ernest Mast 
President and Chief Executive Officer
Phone: (416) 792-2229
Email:  

Laurie Gaborit
VP Investor Relations
Phone: (416) 219-2049
Email: 

For more information, please visit: www.dorecopper.com 

Facebook: Doré Copper Mining
LinkedIn: Doré Copper Mining Corp.
Twitter: @DoreCopper
Instagram: @DoreCopperMining

1. Sources for historic production figures: Economic Geology, v. 107, pp. 963–989 – Structural and Stratigraphic Controls on Magmatic, Volcanogenic, and Shear Zone-Hosted Mineralization in the Chapais-Chibougamau Mining Camp, Northeastern Abitibi, Canada by François Leclerc et al. (Lac Doré/Chibougamau mining camp) and NI 43-101 Technical Report on the Joe Mann Property dated January 11, 2016 by Geologica Groupe-Conseil Inc. for Jessie Ressources Inc. (Joe Mann mine).

Information Concerning Estimates of Mineral Reserves and Resources 

The Mineral Reserve and Mineral Resource estimates in this press release have been disclosed in accordance with NI 43-101, which differs significantly from the requirements of the U.S. Securities and Exchange Commission (the “SEC”), and information with respect to mineralization and Mineral Reserves and Mineral Resources contained herein may not be comparable to similar information disclosed by U.S. companies. The requirements of NI 43-101 for identification of ‘‘reserves’’ are not the same as those of the SEC, and reserves reported by the Company in compliance with NI 43-101 may not qualify as ‘‘reserves’’ under SEC standards. Under U.S. standards, mineralization may not be classified as a ‘‘reserve’’ unless the determination has been made that the mineralization could be economically and legally produced or extracted at the time the reserve determination is made. In addition, and without limiting the generality of the foregoing, this press release uses the terms ‘‘Measured Resources’’, ‘‘Indicated Resources’’ and ‘‘Inferred Resources’’. U.S. investors are advised that, while such terms are recognized and required by Canadian securities laws, the SEC has not recognized them in the past. U.S. investors are cautioned not to assume that any part of a ‘‘Measured Resource’’ or ‘‘Indicated Resource’’ will ever be converted into a ‘‘reserve’’. U.S. investors should also understand that ‘‘Inferred Resources’’ have a great amount of uncertainty as to their existence and as to their economic and legal feasibility. It cannot be assumed that all or any part of ‘‘Inferred Resources’’ exist, are economically or legally mineable or will ever be upgraded to a higher category. Under Canadian securities laws, ‘‘Inferred Resources’’ may not form the basis of feasibility or pre-feasibility studies except in certain cases. Disclosure of ‘‘contained ounces’’ in a Mineral Resource is a permitted disclosure under Canadian securities laws, however, the SEC normally only permits issuers to report mineralization that does not constitute ‘‘reserves’’ by SEC standards as in place tonnage and grade, without reference to unit measures. Accordingly, information concerning mineral deposits set forth in this press release may not be comparable with information made public by companies that report in accordance with U.S. standards. 

The SEC has adopted amendments to its disclosure rules to modernize the mineral property disclosure requirements under the U.S. Securities Exchange Act of 1934, as amended (the “Exchange Act”). These amendments became effective February 25, 2019 (the “SEC Modernization Rules”) with compliance required for the first fiscal year beginning on or after January 1, 2021. Under the SEC Modernization Rules, the historical property disclosure requirements for mining registrants included in Industry Guide 7 under the U.S. Securities Act of 1933, as amended, will be rescinded and replaced with disclosure requirements in subpart 1300 of SEC Regulation S-K. As a result of the adoption of the SEC Modernization Rules, the SEC now recognizes estimates of “Measured Mineral Resources”, “Indicated Mineral Resources” and “Inferred Mineral Resources.” In addition, the SEC has amended its definitions of “Proven Mineral Reserves” and “Probable Mineral Reserves” to be “substantially similar” to the corresponding standards under NI 43-101. While the SEC will now recognize “Measured Mineral Resources”, “Indicated Mineral Resources” and “Inferred Mineral Resources”, U.S. investors should not assume that any part or all of the mineralization in these categories will ever be converted into a higher category of Mineral Resources or into Mineral Reserves. Mineralization described using these terms has a greater amount of uncertainty as to its existence and feasibility than mineralization that has been characterized as reserves. Accordingly, U.S. investors are cautioned not to assume that any Measured Mineral Resources, Indicated Mineral Resources, or Inferred Mineral Resources that the Company reports are or will be economically or legally mineable. Further, “Inferred Mineral Resources” have a greater amount of uncertainty as to their existence and as to whether they can be mined legally or economically. Therefore, U.S. investors are also cautioned not to assume that all or any part of the “Inferred Mineral Resources” exist. There is no assurance that any Mineral Reserves or Mineral Resources that the Company may report as “Proven Mineral Reserves”, “Probable Mineral Reserves”, “Measured Mineral Resources”, “Indicated Mineral Resources” and “Inferred Mineral Resources” under NI 43-101 would be the same had the Company prepared the reserve or resource estimates under the standards adopted under the SEC Modernization Rules.

Mineral Resources are not Mineral Reserves, and do not have demonstrated economic viability, but do have reasonable prospects for economic extraction. Measured and Indicated Mineral Resources are sufficiently well defined to allow geological and grade continuity to be reasonably assumed and permit the application of technical and economic parameters in assessing the economic viability of the Mineral Resource. Inferred Mineral Resources are estimated on limited information not sufficient to verify geological and grade continuity or to allow technical and economic parameters to be applied. Inferred Mineral Resources are too speculative geologically to have economic considerations applied to them to enable them to be categorized as Mineral Reserves. There is no certainty that Mineral Resources of any classification can be upgraded to Mineral Reserves through continued exploration. 

Cautionary Note Regarding Forward-Looking Statements 

This news release includes certain “forward-looking statements” under applicable Canadian securities legislation. Forward-looking statements include predictions, projections and forecasts and are often, but not always, identified by the use of words such as “seek”, “anticipate”, “believe”, “plan”, “estimate”, “forecast”, “expect”, “potential”, “project”, “target”, “schedule”, “budget” and “intend” and statements that an event or result “may”, “will”, “should”, “could” or “might” occur or be achieved and other similar expressions and includes the negatives thereof. Specific forward-looking statements in this press release include, but are not limited to, PEA expected in January 2022; development plan for Devlin to be contiguous with Corner Bay, which the Corporation believes will bring additional tonnes early in the mine life and have operational synergies with Corner Bay; implementing a hub-and-spoke development strategy by advancing the Corporation’s key high-grade copper-gold brownfield projects towards a restart of operations; and the Corporation’s goal of achieving an annual production of 60 M lbs of copper equivalent (or 100,000 oz gold equivalent).

All statements other than statements of historical fact included in this release, including, without limitation, statements regarding the timing and ability of the Corporation to receive necessary regulatory approvals, and the plans, operations and prospects of the Corporation and its properties are forward-looking statements. Forward-looking statements are necessarily based upon a number of estimates and assumptions that, while considered reasonable, are subject to known and unknown risks, uncertainties and other factors which may cause actual results and future events to differ materially from those expressed or implied by such forward-looking statements. Such factors include, but are not limited to, actual exploration results, changes in project parameters as plans continue to be refined, future metal prices, availability of capital and financing on acceptable terms, general economic, market or business conditions, uninsured risks, regulatory changes, delays or inability to receive required regulatory approvals, health emergencies, pandemics and other exploration or other risks detailed herein and from time to time in the filings made by the Corporation with securities regulators. Although the Corporation has attempted to identify important factors that could cause actual actions, events or results to differ from those described in forward-looking statements, there may be other factors that cause such actions, events or results to differ materially from those anticipated. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. The Corporation disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.