Ontario Geological Survey
Permanent Link to this Record:
MDI52M01SW00049
| Record Name(s) | Biron Bay A Zone - 1948, Ledge 4 - 2003 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-12 |
| Date Last Modified | 2022-Sep-28 |
| Created By | |
| Revised By |
Primary Commodities: Gold, Tungsten
Township or Area: Ball
Latitude: 51° 4' 14.11" Longitude: -94° 15' 20.83"
UTM Zone: 15 Easting: 412017.34 Northing: 5658424.36 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52M01SW
Point Location Description: trench
Location Method: Data Compilation
1930s: Golden Arm Mines incorporated, performed early prospecting. 1948: Biron Bay Mines Ltd did surface trenching. 1958: Biron Bay Gold Mines drilled 1 DDH totalling 95.7 m. 1970: Line cutting performed. 1981: Golden Chance Partnership formed, performed electromagnetic and magnetometer surveys.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.29264 | 20000000647 | 20000000647 |
| 2.27144 | 52M01SE2034 | 52M01SE2034 |
| 2.27190 | 52M01SE2035 | 52M01SE2035 |
| 52M01SW-0013 | 20000004935 | 20000004935 |
| 14 | 52M01SW0401 | 52M01SW0401 |
| 63.2884 | 52M01SW0029 | 52M01SW0029 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: U. Greenschist
| Rock Type | Rank | Composition | Texture | Relationship | Magnetite Ironstone | 1 | Chert-Magnetite, | Sheared | Contains |
|---|---|---|---|---|
| Vein | 2 | Quartz | Sheared | Host |
| Felsic lava flow-unsubdivided | 3 | Footwall | ||
| Gabbro | 4 | Gabbro | Sill | Near |
Nov 12, 2014 (K R Kettles) - The deposits occurs in a lens of chert-magnetite iron formation that contains sulphide mineralization. The Shear zone in the iron formation is parallel to the strike of the iron formation.This area is underlain by felsic volcanic rocks, a sill of gabbro, and a lens of chert-magnetite iron formation that contains some sulphide mineralization. The iron formation strikes N70 degs and dips 66 degs to the NE.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 4 | Gold | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Pyrrhotite | Economic | Gangue | ||||
| 3 | Chalcopyrite | Economic | Gangue | ||||
| 5 | Magnetite | Economic | Gangue | ||||
| 6 | Scheelite | Economic | Gangue |
Nov 12, 2014 (K R Kettles) - Shear zones parallel to the strike of the iron formation, and contained within the iron formation unit, host the mineralization which consists of magnetite, pyrite, pyrrhotite, chalcopyrite, and gold. Two samples collected in 1952 assayed up to 0.72% WO2. Assays reported are 0.44 oz/t Au/1.7 m; 0.08 oz/t Au/1.5m, 0.04 oz/t Au over 0.9 m, and 0.02 oz/t Au/0.9 m.
Jul 31, 2020 (Therese Pettigrew) - The Ledge 4 occurrence is located approximately 340 metres to the east-southeast of L3. The outcrop consists mainly of sulphide-bearing banded iron formation, with bedding oriented 110/60N. The unit is at least 15 metres thick and has a sharp contact with fine grained felsic tuffs to the south. A narrow hornblende porphyritic mafic dyke, similar to that seen in the L1 and L2 exposures, cuts the iron formation subparallel to bedding. Sulphide mineralization in the iron formation varies from negligible to locally 10% combined pyrite and pyrrhotite with minor chalcopyrite. Sulphides occur as thin bands parallel to bedding and within quartz veinlets and boudins. Primary magnetite is also present in the iron formation. Channel sample results range up to 6.41 g/t gold over 0.50 metres (Assessment report 52M01SE2034).
File - Resident Geologist files 1946 Biron Bay
Publication Number: Date:
Author:
Publisher Name:
Location: Red Lake RGP office
Map - Ball Township, Kenora District
Publication Number: M2265 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: 63-64 Date: 1987
Author: Durocher M.E., Burchell P.S., Andrews A.J.
Publisher Name: Ontario Geological Survey
Location:
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