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Ontario Geological Survey
Permanent Link to this Record:
MDI52B05SW00003
| Record Name(s) | International Lithium - 1956, Lac La Croix - 1956 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 1984-Sep-10 |
| Date Last Modified | 2022-Mar-04 |
| Created By | |
| Revised By |
Primary Commodities: Lithium
Township or Area: McAree Lake Area
Latitude: 48° 21' 52.4" Longitude: -91° 59' 44.46"
UTM Zone: 15 Easting: 574387.86 Northing: 5357307.74 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52B05NW, 52B05SW
Point Location Description: Precise
Location Method: Data Compilation
1955: International Lithium Mining Corp. conducted trenching and drilled 12 DDH totalling 1220.4 m. 1956: International Lithium drilled an additional 10,111 m of diamond drill holes, testing the dyke over a length of 548.6 m.
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Terrigenous-Clastic-Unsubdivided | 1 | Adjacent |
|---|---|---|---|---|
| Pegmatite | 1 | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Spodumene | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Feldspar | Economic | Gangue | ||||
| 3 | Muscovite | Economic | Gangue | ||||
| 4 | Garnet | Economic | Gangue |
Jul 25, 2017 (Therese Pettigrew) - At the main surface showing a dyke forms a small island, 200 by 55 feet, near the drill camp, and another lies about 650 feet south of the lakeshore, about 3,400 feet to the east. Both strike about east, parallel with the metasedimentary country rocks, dip steeply, and line up roughly along strike. They are similar in mineralogy and structure. The dykes are irregularly banded, longitudinally. Spodumene-bearing quartz-feldspar bands alternate with barren ones composed of aplite and coarse white feldspar. The spodumene is light to dark green, in places brownish and woody. Crystals are up to a foot long and are mainly oriented perpendicular to the dyke, but their attitude differs somewhat from band to band. The bands are interrupted by a few transverse quartz-filled fractures. A closely drilled section, 1,600 feet long, of the main zone is estimated by the company to contain 1.5 million tons grading 1.20 per cent Li20 to a depth of 500 feet. A few other spodumene-bearing dykes outcrop nearby (Mulligan, 1965). The grade varies from 1.22% lithia over a 35-foot width to a high of 2.04% lithia over 55 feet (Vos et al., 1982).
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Intrusive |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| International Lithium | 1965 | Unclassified | 1360777 | Mulligan, 1965, p. 66 | A closely drilled section, 1,600 feet long, of the main zone is estimated by the company to contain 1.5 million tons grading 1.20 per cent Li2O to a depth of 500 feet. | Lithium 1.2 Percent |
Map - Geological compilation series, Quetico sheet, districts of Thunder Bay and Rainy River
Publication Number: P0188 Scale: 1:126,720 Date: 1997
Author: Pye E.G., Fenwick K.G.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Industrial minerals of northern Ontario-supplement 1
Publication Number: OFR5388 Page: 61-62 Date: 1982
Author: Vos M.A., Abolins T., Smith V.
Publisher Name: Ontario Geological Survey
Location:
Publication - Lithium Deposits of Manitoba, Ontario, and Quebec; Geological Survey of Canada, Paper no. 57-3
Publication Number: Paper 57-3 Page: 17 Date: 1957
Author: Mulligan, R.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/101221
Publication - Geology of Canadian Lithium Deposits; Geological Survey of Canada, Economic Geology Report 21
Publication Number: Econ Geol 21 Page: 66 Date: 1965
Author: Mulligan, R.
Publisher Name: Geological Survey o
Location: https://doi.org/10.4095/102454
Publication - Canadian Mining Handbook v. 77 no. 4, p. 73
Publication Number: CanMinV77No.4 Date: 1996
Author:
Publisher Name:
Location:
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office