Ontario Geological Survey
Permanent Link to this Record:
MDI52H08NE00014
| Record Name(s) | Kenogamisis Lithium - 1944 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1980-Feb-06 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Lithium
Township or Area: Kilkenny
Latitude: 49° 26' 17.75" Longitude: -88° 2' 51.01"
UTM Zone: 16 Easting: 424058.2 Northing: 5476704.9 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52H08NE
Point Location Description: Transfer
Location Method: Conversion from MDI
1955: staked by A. Vallee and L. Grenier, then optioned to Kenogamisis Gold Mines Ltd, who drilled 3 DDH totalling 309.3 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 13 | 52H08NE0007 | 52H08NE0007 |
Province: Superior
Subprovince: Quetico
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Host |
|---|---|---|---|---|
| Terrigenous-Clastic-Unsubdivided | 2 | Adjacent | ||
| Diabase | 3 | Diabase | Near |
Jul 24, 2017 (Therese Pettigrew) - The Kenogamisis pegmatite is a tabular-shaped body in metasediments. It strikes N.60 E. and dips 70 NW, and has been traced intermittently in outcrops for about 198 m distant from the shore of Downey Lake. Exposed widths range from about 1.8 m in the most southwesterly exposure, to 4 m at the northeast end at the lakeshore (Pye, 1965).
| 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 |
Jul 24, 2017 (Therese Pettigrew) - The deposit is made up of medium-grained, pink to bluish grey, potash feldspar crystals and fine- to medium-grained spodumene crystals. These occur in a fine-grained matrix of quartz, feldspar, and muscovite. The spodumene content appears to be highest in the central portion of the pegmatite, and the muscovite content highest near the walls. The muscovite occurs as granular-textured aggregates. Much of the spodumene in the central portion of the pegmatite is black and highly sericitized. This may be due to the proximity of a large, thick sheet of diabase to the west and southwest. Surface samples of the Kenogamisis pegmatite were taken at the lakeshore, and at 30.5 m and 61 m from the lakeshore. These samples were found on analysis to indicate 0.49 percent lithia over a width of 3 m; 1.31 percent lithia over a width of 2.7 m; and 0.55 percent lithia over a width of 2.13 m respectively. In the diamond-drillholes, the deposit was found to range from 0.21 percent lithia over a core length of 2.31 m in hole K-2 to 0.78 percent lithia over a core length of 3.75 m in hole K-3. Three narrow dikes of pegmatite, spaced at intervals of 3 and 12.2 m, occur on the east shore of Downey Lake. They strike N.60 E. The largest, averaging 1 m wide, contains about 10 percent spodumene. It lies toughly along the line of strike and may represent the northeast extension of the Kenogamisis pegmatite. At the southwest end of the Kenogamisis deposit and 15.25 m to the north west, a parallel lithium pegmatite about 1.5 wide is exposed. It can be followed on the surface for about 23 m, and was intersected in the diamond-drillholes 30.5 m and 91.4 m northeast of its outcrop. Where exposed, it averages about 5 percent fine-grained spodumene. In diamond-drillhole K-3, it was found to contain 0.57 percent lithia over a core length of 3.5 m; in hole K-l, drilled at 45 degrees from a set-up 200 feet northeast of K-3, 0.29 percent lithia over a core length of 1.5 m. Much of the spodumene is highly sericitized (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:
Folio - Pijitawabik Bay area (Kilkenny Township), District of Thunder Bay
Publication Number: GDIF188 Scale: Date: 1997
Author: Thunder Bay RGO
Publisher Name: Ontario Geological Survey
Location:
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