Ontario Geological Survey
Permanent Link to this Record:
MDI52M01SE00010
| Record Name(s) | M. Blanchard - 1941, W.H. Mills - 1980 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1982-Sep-15 |
| Date Last Modified | 2022-May-06 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Silver
Township or Area: Todd
Latitude: 51° 3' 3.55" Longitude: -94° 10' 34.38"
UTM Zone: 15 Easting: 417557 Northing: 5656153 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52M01SE
Point Location Description: Trenches with py,Au,Ag symbol on OGS map M2406
Location Method: Data Compilation
Pre-1941: Blanchard Group carried out surface work. 1945-54: Blanchard Gold Mines Limited carried out trenching and at least 8 diamond drill holes totalling 59 m. 1980 or earlier: W.H. Mills.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.A14 | 52M01SE0051 | 52M01SE0051 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: U. GS-Amphib
Dec 07, 2005 (K R Kettles) - GEOLOGICAL DESCRIPTION: This area is underlain by east-west striking, vertically dipping mafic lava and felsic tuff, intruded in the northwest by altered ultramafic rocks of the Pipestone Bay Stock and by several east-west striking altered gabbro dikes. Such a mafic dike (6 to 10 m wide) located in the northern part of KRL 8658 has been extensively trenched and was found to contain fairly regular, lenticular, gold-bearing quartz veins with carbonate, chalcopyrite and pyrite. The wallrock is rich in pyrite and contains fuchsite, carbonate and white mica. Irregular quartz veins making up 10% of the rock occur in felsic tuff in the vicinity of post 4KRL 8658 (Thomson 1947). Felsic tuff and mafic lava in the west-central part of the claim are sheared, carbonated, mineralized and have small quartz veinlets. It is unknown whether these latter two types of mineralization carry gold. DEPOSIT DESCRIPTION: A mafic dike, 6 to 10 cm wide, carries gold in quartz veins. Diamond drilling in 1948 suggested there may be an ore zone at least 73 m long and about 4 m wide.
| Rock Type | Rank | Composition | Texture | Relationship | Gabbro | 1 | Gabbro | Adjacent |
|---|---|---|---|---|
| Vein | 2 | Quartz | Host | |
| Mafic lava flow-unsubdivided | 3 | Mafic Lava | Adjacent | |
| Ultramafic-Unsubdivided | 4 | Ultramafic Rocks | Adjacent | |
| Felsic Tuff | 5 | Tuff | Adjacent |
Dec 07, 2005 (K R Kettles) - This area is underlain by east-west striking, vertically dipping mafic lava and felsic tuff, intruded in the northwest by altered ultramafic rocks of the Pipestone Bay Stock and by several east-west striking altered gabbro dikes. Such a mafic dike (6 to 10 m wide) located in the northern part of KRL 8658 has been extensively trenched and was found to contain fairly regular, lenticular, gold-bearing quartz veins with carbonate, chalcopyrite and pyrite. The wallrock is rich in pyrite and contains fuchsite, carbonate and white mica. Irregular quartz veins making up 10% of the rock occur in felsic tuff in the vicinity of post 4KRL 8658 (Thomson 1947). Felsic tuff and mafic lava in the west-central part of the claim are sheared, carbonated, mineralized and have small quartz veinlets. It is unknown whether these latter two types of mineralization carry gold.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Gold | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Pyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| Carbonate | Alteration | Carbonatization | 1 | Strong | Replacement | ||
| Fuchsite | Alteration | Hydrothermal | 2 | Strong | Replacement | ||
| Mica | Alteration | Hydrothermal | 3 | Strong | Replacement | ||
| Pyrite | Alteration | Sulphidation | 4 | Medium | Disseminated |
Dec 07, 2005 (K R Kettles) - MDI1 DATA: GRADE 1975 OGS GRAB SAMPLE: FROM TRENCH IN GABBRO DIKE:0.03 OPT AU MAX., ONE ASSAY RETURNED 0.43 OPT AG, GRADE 1946 - 4 DDH'S: 0.23 OPT AU/91 CM, AVE.0.198/5.49 M, AVE. 0.387/3.96 M, AVE. 0.571/4.88 M Four diamond drill holes from 1946 drilling yielded good values in gold: DD HOLE # 19 0.23 OZ/TON Au, 7.886 G/TONNE Au, 91 cm width. DD HOLE # 20 0.198 OZ/TON Au, 6.788 G/TONNE Au, average grade over 5.49 m. DD HOLE # 21 0.387 OZ/TON Au, 13.268 G/TONNE Au, average grade over 3.96 m. DD HOLE # 22 0.571 OZ/TON Au, 19.577 G/TONNE Au, average grade over 4.88 m. Diamond drilling in 1950 did not reproduce these results.
Dec 07, 2005 (K R Kettles) - The wallrock is altered to carbonate, fuchsite and white mica. It contains much pyrite.
Map - Geological series, Todd Township, District of Kenora (Patricia Portion)
Publication Number: P1052 Scale: 1:12,000 Date: 1975
Author: Riley R.A.
Publisher Name: Ontario Division of Mines
Location:
Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2
Publication Number: OFR5558 Page: 664-665 Date: 1987
Author: Durocher M.E., Burchell P.S., Andrews A.J.
Publisher Name: Ontario Geological Survey
Location:
Part - Geology and mineral deposits of the Red Lake area
Publication Number: ARV49-02 Page: 77 Date: 1998
Author: Horwood H.C.
Publisher Name: Ontario Dept. of Mines
Location:
File - Resident Geologist's Files, Red Lake
Publication Number: RGF 1948 Date: 1948
Author: Blanchard Gold Mines Limited
Publisher Name:
Location: Red Lake RGP
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