Ontario Geological Survey
Permanent Link to this Record:
MDI000000003492
| Record Name(s) | Spruce Pegmatite - 2022 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2023-Jul-18 |
| Date Last Modified | 2023-Jul-18 |
| Created By | |
| Revised By |
Primary Commodities: Beryllium
Township or Area: McAlpine Lake Area
Latitude: 48° 41' 38.86" Longitude: -91° 30' 29.86"
UTM Zone: 15 Easting: 609772 Northing: 5394528 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52B12NE
Point Location Description: OFR6401 p. 73
Location Method: Data Compilation
2022: Grid Metals Corp. carried out prospecting and sampling. 2023: Usha Resources Ltd. optioned the property.
Province: Superior
Subprovince: Quetico
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Is |
|---|---|---|---|---|
| Granite | 2 | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Beryl | Economic | Ore | ||||
| 2 | Muscovite | Economic | Ore | ||||
| 3 | Tourmaline | Economic | Ore | ||||
| 4 | Cleavelandite | Economic | Ore |
Jul 18, 2023 (Therese Pettigrew) - The Spruce Pegmatite (609772E 5394528N) is situated west of Nym Lake, approximately 6.5 km from the Maple Leaf Dike. The pegmatite trends east-northeast at 78°, is approximately 25 to 30 m wide, and is hosted within granitic rocks. The pegmatite features cream-coloured beryl, minor green muscovite, tourmaline, and possibly bladed cleavelandite (?). Sample B418851 returned 3100 ppm Be. Sampling in this area of green muscovite, returned anomalous Cs and Ta (Campbell et al., 2023).
| Commodity | Analytical Method | Digestion Method | Result | Unit | Limit | Qualifier |
|---|---|---|---|---|---|---|
| Beryllium | ICP-MS | Peroxide fusion | 3100 | ppm | ||
| Cesium | ICP-MS | Peroxide fusion | 139 | ppm | ||
| Lithium | ICP-MS | Peroxide fusion | 70 | ppm | ||
| Niobium | ICP-MS | Peroxide fusion | 7.4 | ppm | ||
| Rubidium | ICP-MS | Peroxide fusion | 162 | ppm | ||
| Tantalum | ICP-MS | Peroxide fusion | 2.1 | ppm |
Mono - Report of Activities 2022, Resident Geologist Program, Thunder Bay South Regional Resident Geologist Report: Thunder Bay South District
Publication Number: OFR6401 Page: 73 Date: 2023
Author: Campbell D.A., Jonsson J.R.B., Dorland G., Pettigrew T.K., Ferguson S.A.
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