Ontario Geological Survey
Permanent Link to this Record:
MDI42E05SW00021
| Record Name(s) | Point - 1980 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1980-Jan-31 |
| Date Last Modified | 2022-Mar-04 |
| Created By | |
| Revised By |
Primary Commodities: Lithium
Township or Area: Barbara Lake Area
Latitude: 49° 18' 50.66" Longitude: -87° 54' 44.28"
UTM Zone: 16 Easting: 433693.06 Northing: 5462770.92 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42E05SW
Point Location Description: General
Location Method: Conversion from MDI
Access Description: The property is approx. 50 km NE of Nipigon. Access is along Highway 11, turn onto Gorge Creek Road,
1955: staked by Ontario Lithium Company Ltd., who conducted trenching and sampling. 1957: Ontario Lithium Co. Ltd. drilled 8 DDH totalling 546.6 m. 2011: Canadian Copper Core Inc. flew aeromag and VLF-EM geophysical surveys.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.50968 | 20000007174 | 20000007174 |
| 10 | 42E05SW0013 | 42E05SW0013 |
Province: Superior
Subprovince: Quetico
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Schist-Unsubdivided | 1 | Quartz-Mica | Adjacent |
|---|---|---|---|---|
| Pegmatite | 2 | Host | ||
| Granite | 3 | Adjacent | ||
| Diabase | 4 | Diabase Sills And Dykes |
| 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 | Apatite | Economic | Gangue |
Jun 29, 2017 (Therese Pettigrew) - The Point pegmatite is exposed in an outcrop, measuring 25 feet by 35 feet, along the shore at the southwest end of Georgia Lake. It is made up of medium- to coarse-grained crystals of potash feldspar and spodumene in a matrix of feldspar, quartz, subordinate muscovite, and accessory apatite. The spodumene content is 5-10 percent, and between 28 August and 3 October 1955, the deposit was tested at intervals of 100-200 feet by eight diamond-drillholes aggregating 1,793.0 feet. From the outcrop, the pegmatite was traced irregularly westward for about 600 feet. Throughout this length it was found to dip 60-70 degrees N and to range from 25 to 60 feet in thickness. The average lithia content is low. The best material was located in diamond-drillhole No. 201, bored S 45 degrees E at 30 degrees to test the dike about 200 feet west of the outcrop. This hole cut 23.7 feet of pegmatite, of which the upper 15 feet was found on analysis to average 0.96 percent Li2O. A flat sheet of diabase at least 100 feet thick was located in three diamond-drillholes at vertical depths of 100-115 feet. Near this sheet, in diamond-drillholes Nos. 202 and 204, the spodumene of the pegmatite was found to be highly altered. The spodumene content of the pegmatite cut in hole No. 202, for example, was visually estimated to be 10-15 percent, whereas the lithia content was found on analysis to be only 0.01-0.04 percent (Pye, 1965).
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Intrusive |
Map - Georgia Lake area, Thunder Bay District
Publication Number: M2056 Scale: 1:63,360 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology and lithium deposits of Georgia Lake area, District of Thunder Bay
Publication Number: R031 Scale: Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Geology of Canadian Lithium Deposits; Geological Survey of Canada, Economic Geology Report 21
Publication Number: Econ Geol 21 Scale: Date: 1965
Author: Mulligan, R.
Publisher Name: Geological Survey o
Location: https://doi.org/10.4095/102454
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