Ontario Geological Survey
Permanent Link to this Record:
MDI52E10SW00015
| Record Name(s) | Imperial - 1899, D397 - 1899 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1980-May-30 |
| Date Last Modified | 2022-Mar-03 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Glass
Latitude: 49° 34' 52.97" Longitude: -94° 56' 17.8"
UTM Zone: 15 Easting: 359891 Northing: 5493893.01 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52E10SW
Point Location Description: Trench location from Assessment report 20000014750
Location Method: Data Compilation
Access Description: The workings are on mining location D397, 1.6 km southeast of the Mikado Mine, or 0.9 km north of the eastern end of Helldiver Bay. The area may be reached by boat from Clytie Bay Landing or from Kenora via Ash Rapids.
1899-1900: property owned by H.C. Symmes. Workings consisted of a 5 by 8 ft shaft that was 70 ft deep, with 18 ft of lateral work on the 65 ft level. A second shaft, 50 ft to the east, was said to be 50 ft deep, and was full of water. 1981: Denison Mines Ltd. conducted a magnetic survey. 1987: St. Joe Canada Inc. carried out geological mapping. 2014: W.C. Hood carried out geological mapping and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.13760 | 52E10SW8227 | 52E10SW8227 |
| 2.10215 | 52E10SW8562 | 52E10SW8562 |
| 2.55444 | 20000014750 | 20000014750 |
| 2.4145 | 52E10SW8565 | 52E10SW8565 |
Province: Superior
Subprovince: Wabigoon
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Basalt | Adjacent |
|---|---|---|---|---|
| Mylonite/Fault Gouge/Pseudotachylite | 2 | Shear Zone | Contains | |
| Vein | 3 | Contains | ||
| Granodiorite | 4 |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Gold | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue |
Jan 28, 2020 (Therese Pettigrew) - Bow (1900) reported that "there are said to be five parallel zones within a distance of 110 or 120 feet; these are simply zones of quartz and greenstone, mixed; the quartz occurring in small stringers and sometimes forming a definite vein." The east shaft is located on the contact between a fine-grained granodiorite dike and fine-grained pyritiferous basalt. A 20 to 30 cm wide quartz vein and several smaller quartz veins and veinlets cut the contact. The relationships between basalt and granodiorite are difficult to determine, due to a large muck pile covering the area. The southeast-striking, east-dipping quartz veins are poorly mineralized with spotty pyrite; however, visible gold has been reported (Davies, 1978). The west shaft was sunk in basalt, and was probably designed to provide access to the quartz vein at depth. There is no evidence in the muck pile that the vein or the granodiorite dike were encountered. North of this shaft is a northeast-trending fracture zone; blocks derived from a shallow, 30 m long trench Indicate that cherty silica occurred in the zone and that brecciation of this was followed by intense carbonatization. Samples taken by Davies and Smith (1988) of the altered, fine-grained granodiorite and footwall basalt contained 7 ppb and 23 ppb of gold, respectively. The Imperial Mine shear zone consists of poorly developed, discontinuous quartz stringers hosted within weakly altered, limonitic feldspar phyric basalt flows. The wallrock contains trace to 1% pyrite in locally distributed disseminations. The zone trends 25-35 and dips 75 northeast (Assessment report 52E10SW8562). Sampling carried out in 2014 returned values of up to 0.7 g/t Au from the Imperial zone, and up to 3.4 g/t Au from a quartz vein within granodiorite/tonalite about 100 m north of the Imperial zone (Assessment report 20000014750).
Mono - The geological setting of gold occurrences in the Lake of the Woods area
Publication Number: OFR5695 Scale: Date: 1988
Author: Davies J.C., Smith P.M.
Publisher Name: Ontario Geological Survey
Location:
Part - Mines of northwestern Ontario
Publication Number: ARV09.003 Scale: Date: 1998
Author: Bow J.A.
Publisher Name: Ontario Bureau of Mines
Location:
MonoMap - Geology of the Shoal Lake-Western Peninsula area, District of Kenora
Publication Number: OFR5242 Scale: Date: 1978
Author: Davies J.C.
Publisher Name: Ontario Geological Survey
Location:
Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River
Publication Number: MDC016 Scale: Date: 1976
Author: Beard R.C., Garratt G.L.
Publisher Name: Ontario Division of Mines
Location:
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