Ministry of Energy, Northern Development and Mines
Permanent Link to this Record: MDI000000002321| Deposit Name(s) | Power Explorations Trench M - 1987 |
|---|---|
| Deposit Status | prospect |
| Date Created | 2019-Aug-19 |
| Date Last Modified | 2019-Aug-19 |
| Created By | T Pettigrew |
| Revised By | T Pettigrew |
Primary Commodities: gold
Township or Area: Randall Lake Area, Keeyask Lake Area
Latitude: 52° 52' 24.89" Longitude: -91° 5' 10.54"
UTM Zone: 15 Easting: 628800 Northing: 5859923 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53B14SE
Point Location Description: Trench M from Assessment report 53B14SE0004
Location Method: data compilation
1978: St. Joseph Explorations Ltd. conducted an EM and magnetometer survey. 1985: Moss Resources conducted mapping, trenching, sampling, and EM and magnetic surveys. 1987: Power Explorations Inc. carried out prospecting, trenching, sampling, and mapping. 1988: Power Explorations Inc. drilled 26 DDH totalling 4585.7 m. 1989: Guinness Gold Resources Ltd. drilled 24 DDH totalling 2450.5 m. 2002: Placer Dome Canada conducted lake sediment sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 16 | 53B14SE0002 | Open |
| 15 | 53B14SE0003 | Open |
| 17 | 53B14SE0006 | Open |
| 20 | 53B14NE0005 | Open |
| 2.10731 | 53B14SE0004 | Open |
| 18 | 53B14NE0008 | Open |
| 2.8799 | 53B14SE9437 | Open |
| 2.27690 | 53G02SW2001 | Open |
| 53B14SE0022 | 53B14NE0553 | Open |
| 53B14NE0011A1 | 53B14NE0554 | Open |
| 2.8098 | 53B14NE9438 | Open |
Province: Superior
Subprovince: Sachigo
Belt: North Caribou
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship |
|---|---|---|---|---|
| metasedimentary | 1 | sheared greywacke | contains | |
| vein | 2 | quartz-carbonate | host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Habit Description |
|---|---|---|---|---|---|---|---|
| 1 | pyrite | economic | ore | ||||
| 2 | pyrrhotite | economic | ore | ||||
| 3 | galena | economic | ore | ||||
| 4 | chalcopyrite | economic | ore | ||||
| 5 | graphite | economic | ore |
08/19/2019 (T Pettigrew) - Numerous outcrops of sheared greywacke were exposed on the shoreline of the river this year by low water levels. These outcrops contain numerous en echelon galena-chalcopyrite-bearing quartz-carbonate veins. The original gold showing was discovered on the shoreline at Trench M, where an 8-inch quartz vein containing 10% pyrite with minor pyrrhotite, galena, and chalcopyrite was discovered by prospecting. The vein is covered by shallow water so a maximum width is hard to determine. The vein originally assayed 25,304 ppb (0.77 ounces gold per ton). Several other grab samples were taken from the vein which assayed from 0.32 to 1.79 ounce gold per ton. The largest piece of vein material recovered from the river measured 9 inches in width. The vein is traceable for 14 feet under water. This vein is hosted in crenulated, carbonatized, chloritized greywacke. The highest gold assays of 1.79 and 1.77 ounces per ton were taken from vein material containing up to 60% pyrite, 5% galena, 2% chalcopyrite, and traces of pyrrhotite. The vein selvage is chloritic and waxy, a few chlorite stringers crosscut the vein parallel to the wall rock. A trace of graphite was also noted along the vein selvage (Assessment report 53B14SE0004).
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