Ontario Geological Survey
Permanent Link to this Record:
MDI53C12NE00013
| Record Name(s) | Pennock Lake Spodumene - 1972, Setting Net Southwest - 1983 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1983-Dec-29 |
| Date Last Modified | 2024-Jan-02 |
| Created By | |
| Revised By |
Primary Commodities: Lithium
Secondary Commodities: Tantalum
Township or Area: Setting Net Creek Area
Latitude: 52° 44' 56.33" Longitude: -93° 38' 57.38"
UTM Zone: 15 Easting: 456175 Northing: 5844545 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 53C12NE
Point Location Description: CH-45 channel sample location (Frontier Lithium news release Dec 28, 2023)
Location Method: Data Compilation
Access Description: Air remote.
1972: OGS staff member Ayres carried out sampling. 2018: Frontier Lithium conducted mapping and sampling. 2019: Frontier Lithium carried out channel sampling. 2022: Frontier Lithium carried out mapping and prospecting. 2023: Frontier Lithium carried out channel sampling.
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Belt: Favourable Lake
Geological Age: Neoarchean
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Host |
|---|---|---|---|---|
| Granitoid-Unsubdivided | 2 | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Spodumene | Economic | Ore | ||||
| 2 | Lepidolite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Feldspar | Economic | Gangue |
Nov 02, 2007 (Mark Puumala) - Ayres (1972) describes this occurrence as a white pegmatite dike mineralized with fine-grained, partially-recrystallized spodumene. Dikes similar to this one are relatively common within an approximately 800 m to 1600 m northwest-trending zone in the granitic batholith located south and west of Setting Net Lake (Ayres 1972). This pegmatite-bearing zone is reported to be located immediately to the north of the Bear Head fault zone. A grab sample of the spodumene-bearing pegmatite is reported by Ayres (1972) to have assayed 0.52% Li.
Mar 14, 2019 (Therese Pettigrew) - Frontier Lithium describes the pegmatite as a lithium cesium tantalum (LCT) pegmatite intruded vertically into granitoids and metavolcanics. The surface showing of the pegmatite is at least 16x30 m. The outcrop consists entirely of spodumene and quartz intergrowth (SQUI), aplite, and feldspar. Lithium contents from a grab sample gave 4.41% Li2O (Frontier Lithium press release Feb 28, 2019). Channel CH-45 returned up to 1.96% Li2O and 80 ppm Ta2O5 over 16.0 m from a pegmatite/aplite. An aplite dyke returned returned 0.58% Li2O and 118 ppm Ta2O5 over 0.8 m in CH-54 (Frontier Lithium press release Dec 28, 2023).
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
| Rank | Characteristic |
|---|---|
| 1 | Intrusive |
Article - Setting Net and Northwind lakes areas, District of Kenora (Patricia Portion)
Publication Number: MP053.001 Page: 12 Date: 1997
Author: Ayres L.D.
Publisher Name: Ontario Division of Mines
Location:
Map - Precambrian Geology, Kember Lake Area
Publication Number: P3220 Scale: 1:50,000 Date: 1993
Author: Stone D., Crawford J., Halstead J.M.
Publisher Name: Ontario Geological Survey
Location:
Article - Rare-metal mineralization associated with the Berens River-Sachigo subprovincial boundary, northwestern Ontario: discovery of a new zone of complex-type, petalite subtype pegmatite and implications for future exploration
Publication Number: MP169.024 Page: 168 Date: 1998
Author: Breaks F.W., Tindle A.G., Smith S.R.
Publisher Name: Ontario Geological Survey
Location:
Map - Favourable Lake-Berens Lake, geological compilation series, Kenora District
Publication Number: M2262 Scale: 1:253,440 Date: 1973
Author: Ayres L.D., Raudsepp M., Averill S.A., Edwards G.R.
Publisher Name: Ontario Division of Mines
Location:
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