Ontario Geological Survey
Permanent Link to this Record:
MDI000000001807
| Record Name(s) | Bruce Channel - 2005, Cochenour Project - 2011 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 2015-Jan-26 |
| Date Last Modified | 2022-Jan-05 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Dome
Latitude: 51° 4' 13.59" Longitude: -93° 49' 21.07"
UTM Zone: 15 Easting: 442372 Northing: 5657980 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N04SW
Point Location Description: Goldcorp company publications
Location Method: Data Compilation
Access Description: The Bruce Channel is located approximately 6 km north of the town of Red Lake, and road access is available to the town of Cochenour. Access to McKenzie Island is by boat launch during summer months and by ice road during winter months.
2003: Southern Star undertook an exploration program including line cutting, geophysical surveys (IP, resistivity, magnetometer, VLF-EM), geochemical soil surveys, geological mapping and prospecting, and drilling 4 DDH totaling 3,434 m, which resulted in the discovery of the Bruce Channel deposit. 2004: Southern Star drilled 4 DDH totaling 6385 m in the Bruce Channel target area. 2005: Southern Star drilled 4 DDH totaling 9990 m on the Bruce Channel Zone. 2006: Southern Star drilled 5 DDH totaling 4274 m. In Sept 2006, Southern Star and Exall merged to form Gold Eagle Mines Ltd. 2007: Gold Eagle Mines drilled 44 DDH (with 106 wedges) totaling 39,953 m. A 1460 m vertical pilot hole for the shaft was drilled. 2008: Gold Eagle drilled 54 DDH totaling 46,549 m. Plan to sink shaft was postponed. Goldcorp acquired Gold Eagle Mines in July 2008. 2009: Goldcorp drilled 57 DDH totaling 9312 m. Instead of sinking a new shaft, Goldcorp plans to enlarge and upgrade the existing Cochenour Willans shaft and construct a 5 km drift and high speed tram on the 5400 Level connecting to the Red Lake mine, enabling the Bruce Channel deposit ore to be hauled directly to the Red Lake mine and processed at the existing mill facility. Shaft dewatered to 1650 level. 2010: Goldcorp continued with shaft rehabilitation, with the shaft dewatered to the 2250 foot level. Diamond drilling continued on the property. 2011: Goldcorp continued with shaft rehabilitation, with the shaft enlarging having reached 83 m. Construction of the haulage drift reached 1.2 km. Goldcorp drilled 7 deep holes and several wedges, totaling 45,839 m. 2012: Goldcorp continued with shaft widening and deepening. The haulage drift reached 68% completion. 40 DDH were drilled, totaling 50,432 m. 2013: shaft rehabilitation and haulage drift advancement continued. By year end, the haulage drift was 95% completed. Diamond drilling continued on the property. 2014: shaft rehabilitation and haulage drift advancement continued. Underground diamond drilling of the Bruce Channel continued.
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Terrigenous-Clastic-Unsubdivided | 2 | Cherty | Siltstones, Sandstones, Conglomerates |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 4 | Arsenopyrite | Economic | Ore | ||||
| 5 | Chalcopyrite | Economic | Ore | ||||
| 6 | Galena | Economic | Ore | ||||
| 7 | Sphalerite | Economic | Ore | ||||
| Biotite | Alteration | Biotitic | 1 | Unknown | Disseminated | ||
| Carbonate | Alteration | Carbonatization | 2 | Unknown | Disseminated | ||
| Silica | Alteration | Silicification | 3 | Unknown | Disseminated |
Jan 29, 2015 (Therese Pettigrew) - Coarse visible gold has been noted and is most frequently found either within or juxtaposing veinlets of quartz and quartz-carbonate. The gold mineralization is not restricted to one lithotype but may occur in any of the rocks provided there are favourable structural conditions. Prospective zones can be definted by the presence of biotite and carbonate alteration, often with coincident silicification. The onset of carbonate alteration appears to be a defining parameter for at least some of the gold mineralization in the Bruce Channel Zone. The most pervasive and common mineralization is pyrrhotite and pyrite. While these sulphides do not appear to be reliable indicators of gold mineralization, they are almost always present in the sections containing or surrounding gold values. The Balmer assemblage is the rock formation which hosts the economic gold mineralization at Goldcorp’s Red Lake mine, Placer Dome’s Campbell mine, and the Cochenour Willans mine. The Bruce Channel Zone is believed to be the possible down dip extension of the Cochenour Willans mine (2006 NI 43-101 report). During the original drill program in 2004-5, some of the best intercepts included DDH BC3: 51.02 g/t Au from 1079.63-1080.53 m; DDH BC4: 51.80 g/t Au from 1233.15-1233.90 m; and DDH BC5: 58.17 g/t from 370.85-371.58 m. Assays ranged from 3.12 g/t to 58.17 g/t Au (OFR6146 p. 33). Significant assays from the drill program in 2005 ranged from 7.26 to 502.46 g/t Au (OFR6180, p. 26). Significant assays from the drill program in 2006 ranged from 3.42 to 2355.35 g/t Au (OFR6200, p. 26-27).
| Shape | Length | Thickness | Depth | Strike | Dip | Plunge | Trend | Age | Reference |
|---|---|---|---|---|---|---|---|---|---|
| Unknown | 645 | 450 | 1100 |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Cochenour Project | 2016 | Inferred Mineral Resource | 3910000 | Goldcorp Inc., news release, October 26, 2016 | 2.15 M oz Au | Gold 17.09 Grams per Tonne |
| Cochenour Project | 2016 | Indicated Mineral Resource | 598000 | Goldcorp Inc., news release, October 26, 2016 | 289,000 oz Au | Gold 15.03 Grams per Tonne |
| Cochenour Project | 2012 | Inferred Mineral Resource | 9050000 | Goldcorp Inc., news release, February 14, 2013; Management’s Discussion and Analysis for the Year ended December 31, 2012 | 3.25 M oz Au | Gold 11.18 Grams per Tonne |
Publication - Technical Report on the Gold Mineralization Found in the Bruce Channel Zone and in the Western Discovery Zone, Gold Eagle Mine Property, Red Lake, Ontario
Publication Number: Tech. Rep. Date: 2006
Author: Lewis, W.J.
Publisher Name: Micon for Southern Star and Exall Resources
Location: SEDAR
Mono - Report of Activities 2004, Resident Geologist Program, Red Lake Regional Resident Geologist Report: Red Lake and Kenora Districts
Publication Number: OFR6146 Date: 2005
Author: Lichtblau A.F., Hinz P., Ravnaas C., Storey C.C., Kosloski L., Raoul A., Gula R.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 2005, Resident Geologist Program, Red Lake Regional Resident Geologist Report: Red Lake and Kenora Districts
Publication Number: OFR6180 Date: 2006
Author: Lichtblau A.F., Ravnaas C., Storey C.C., Raoul A., Gula R., Saunders D.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 2006, Resident Geologist Program, Red Lake Regional Resident Geologist Report: Red Lake and Kenora Districts
Publication Number: OFR6200 Date: 2007
Author: Lichtblau A.F., Ravnaas C., Storey C.C., Raoul A., Saunders D., McDonald J.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 2007, Resident Geologist Program, Red Lake Regional Resident Geologist Report: Red Lake and Kenora Districts
Publication Number: OFR6216 Date: 2008
Author: Lichtblau A.F., Ravnaas C., Storey C.C., Hinz P., Bongfeldt J.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 2008, Resident Geologist Program, Red Lake Regional Resident Geologist Report: Red Lake and Kenora Districts
Publication Number: OFR6232 Date: 2009
Author: Lichtblau A.F., Ravnaas C., Storey C.C., Hinz P., Bongfeldt J.
Publisher Name: Ontario Geological Survey
Location:
Map - Dome Township, Kenora District
Publication Number: M2074 Scale: 1:12,000 Date: 1997
Author: Ferguson S.A.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Precambrian Geology, Dome Township
Publication Number: OFM0231 Scale: 1:12,000 Date: 1993
Author: Atkinson B.T.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 2009, Resident Geologist Program, Red Lake Regional Resident Geologist Report: Red Lake and Kenora Districts
Publication Number: OFR6244 Date: 2010
Author: Lichtblau A.F., Ravnaas C., Storey C.C., Lockwood H.C., Bongfeldt J., McDonald S.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 2011, Resident Geologist Program, Red Lake Regonal Resident Geologist Report: Red Lake and Kenora Districts
Publication Number: OFR6271 Date: 2012
Author: Lichtblau A.F., Ravnaas C., Storey C.C., Bongfeldt J., Lockwood H.C., Wilson A.C.
Publisher Name: Ontario Geological Survey
Location:
Mono - Report of Activities 2012, Resident Geologist Program, Red Lake Regional Resident Geologist Report: Red Lake and Kenora Districts
Publication Number: OFR6283 Date: 2013
Author: Lichtblau A.F., Ravnaas C., Storey C.C., Debicki R.L., Lockwood H.C., Tuomi R.D., Zurevinski S.E., Moses P., Bongfeldt J.
Publisher Name: Ontario Geological Survey
Location:
Map - Precambrian Geology, Red Lake
Publication Number: P3227 Scale: 1:50,000 Date: 1993
Author: Atkinson B.T., Stone D.
Publisher Name: Ontario Geological Survey
Location:
Map - Red Lake-Birch Lake sheet, geological compilation series, Kenora District
Publication Number: M2175 Scale: 1:253,440 Date: 1970
Author: Ferguson S.A., Davies J.C., Brown D.D., Pryslak A.P.
Publisher Name: Ontario Dept. of Mines
Location:
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