Ontario Geological Survey
Permanent Link to this Record:
MDI000000002669
| Record Name(s) | McGruer Lake South - 1985 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2021-Oct-29 |
| Date Last Modified | 2022-Jan-18 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Seeseep Lake Area
Latitude: 52° 58' 15.47" Longitude: -90° 48' 46.32"
UTM Zone: 15 Easting: 646868 Northing: 5871279 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53B15NW
Point Location Description: DDH G-85-4 from Assessment report 53B15NW0019
Location Method: Data Compilation
1985: Ontario Gold Joint Venture carried out geological mapping, soil sampling, ground magnetic and EM surveys, and drilled 6 DDH totalling 408.1 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 53B15NW0012A1 | 53B15NW0019 | 53B15NW0019 |
| 2.11830 | 53B15NW0003 | 53B15NW0003 |
| W8503.00132 / 53B15NW0019 | 53B15NW0020 | 53B15NW0020 |
Province: Superior
Subprovince: Berens River
Terrane: North Caribou
Domain: North Caribou Core
Belt: North Caribou
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | grunerite-magnetite | Host |
|---|---|---|---|---|
| Schist-Unsubdivided | 2 | chlorite silica sericite schist | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Arsenopyrite | Economic | Ore |
Oct 29, 2021 (Therese Pettigrew) - Massive to disseminated arsenopyrite mineralization occurs in siliceous iron formation and adjacent sedimentary rocks centered at 11+00E, 0+50N. A chip sample across a true width of 1.7 m assayed 5.1 g/t gold. The zone has been traced for 35 m along strike (Assessment report 53B15NW0020). DDH G-85-4 returned up to 0.63 ppm Au over 1.1 feet from a grunerite-magnetite iron formation with 30-50% grunerite, 20-35% magnetite, and 1-2% pyrite-pyrrhotite-arsenopyrite (Assessment report 53B15NW0019).
| Commodity | Analytical Method | Digestion Method | Result | Unit | Limit | Qualifier |
|---|---|---|---|---|---|---|
| Gold | Unknown | 630 | ppb |
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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office