Ontario Geological Survey
Permanent Link to this Record:
MDI000000003596
| Record Name(s) | Riches Li Pegmatite - 2023, Riches Spodumene Pegmatite - 2023 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2023-Dec-01 |
| Date Last Modified | 2023-Dec-01 |
| Created By | |
| Revised By |
Primary Commodities: Lithium, Tantalum
Secondary Commodities: Cesium
Township or Area: Parks Lake Area
Latitude: 49° 28' 7.2" Longitude: -87° 35' 32.07"
UTM Zone: 16 Easting: 457090 Northing: 5479726 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 42E05NE
Point Location Description: Tearlach Resources Ltd. press release (November 28, 2023) Channel sample GS-CH-23-01
Location Method: Other Literature
2023: Tearlach Resources Ltd. carried out geological mapping and sampling resulting in the discovery of lithium pegmatites.
Province: Superior
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Is |
|---|
Dec 01, 2023 (Sheree Hinz) - Riches Pegmatite is open along strike of the peninsula and down dip. The north end of channel GS-CH-23-03 is coarse-grained spodumene covered by overburden and tree roots. A test pit dug by hand 7 m northeast of channel GS-CH-23-03 discovered more coarse-grained green spodumene beneath overburden. Riches spodumene pegmatite has an exposed width of 12 m and length of 9 m with crystals up to 70 cm long. The spodumene pegmatite is hosted by coarse-grained biotite-muscovite granite. The pegmatite has three spodumene-rich zones: green spodumene zone, blue spodumene zone and inner core zone with abundant very coarse-grained green spodumene crystals.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Spodumene | Economic | Ore | ||||
| 2 | Cleavelandite | Economic | Ore | ||||
| 2 | Muscovite | Economic | Gangue |
Dec 01, 2023 (Sheree Hinz) - Tearlach Resources Ltd discovered a spodumene-bearing pegmatite during their 2023 field season. Channel sampling assays returned 4.04% Li2O and 280 ppm Cs over 0.70m (sample 889594, channel GS-CH-23-03), 3.53% Li2O and 595 ppm Ta over 1m (sample 889591, channel GS-CH-23-03). A grab sample assay of Riches Pegmatite returned 6.48 % Li2O from blue-grey spodumene (sample 889574).
Press Release - Tearlach Resources Channel Samples up to 4.04 % Li2O over 0.70 m on Georgina Properties
Publication Number: Press Release Date: 2023
Author: Ross, C.
Publisher Name: Tearlach Resources Ltd
Location: SEDAR
Press Release - Tearlach Discovers Beryl and Nb-Ta-oxide Pegmatites on Georgina Properties
Publication Number: Press Release Date: 2023
Author: Ross, C.
Publisher Name: Tearlach Resources Ltd
Location: SEDAR
Press Release - Tearlach Resources Discovers Spodumene on Georgina Properties
Publication Number: Press Release Date: 2023
Author: Ross, C.
Publisher Name: Tearlach Resources Ltd
Location: SEDAR
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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office