Ontario Geological Survey
Permanent Link to this Record:
MDI52I08NW00019
| Record Name(s) | Dempster L40 - 1958, Zig Zag Lake - 1958 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1983-Sep-06 |
| Date Last Modified | 2023-May-19 |
| Created By | |
| Revised By |
Primary Commodities: Lithium
Township or Area: Crescent Lake Area
Latitude: 50° 26' 49.03" Longitude: -88° 19' 27.82"
UTM Zone: 16 Easting: 405969 Northing: 5589165.01 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52I08NW
Point Location Description: From map in Sovereign Gold Nov 15, 2016 press release
Location Method: Data Compilation
1956-75: Dempster Mines Limited conducted mapping, trenching, sampling, DD-24, ground geophysics. 1979: Cominco Ltd. and E & B Exploration Inc. carried out mapping, sampling, and soil sampling. 2016: Sovereign Gold Company Ltd. optioned the property from Stockport Exploration Inc. and carried out prospecting and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.3304 | 52I08NW0004 | 52I08NW0004 |
| 63A.352 | 52I08NW0028 | 52I08NW0028 |
| 19 | 52I08NW0015 | 52I08NW0015 |
| 2.3207 | 52I08NE0006 | 52I08NE0006 |
Province: Superior
Subprovince: Wabigoon
Belt: Caribou Lake
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Gneiss-Unsubdivided | 1 | Granite | Adjacent |
|---|---|---|---|---|
| Pegmatite | 2 | Is |
Mar 07, 2014 (A Wilson) - The deposit is in a granitic host and is exposed across widths up to 25 feet in two trenches about 30 feet apart, along an easterly strike. It dips 45 S.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Spodumene | Economic | Ore | ||||
| 2 | Feldspar | Economic | Gangue |
Mar 07, 2014 (A Wilson) - The dike is made up of medium-grained to coarse-grained, pale-green spodumene and coarse-grained to very coarse-grained potash feldspar associated with quartz, muscovite, and accessory apatite. The spodumene makes up about 30% of the pegmatite. It is of interest that its prismatic crystals pitch steeply north and in so doing reflect the dip, 45ºS, of the deposit. Sampling of the pegmatite indicated grades of l to 1.5% Li2O.
Apr 10, 2019 (Therese Pettigrew) - Sovereign Gold Company sampled the showing in 2016 and received results of 1.84% Li2O (Cundari et al., 2017).
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
Map - Crescent Lake area, Thunder Bay District
Publication Number: M2100 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Industrial minerals of northern Ontario-supplement 1
Publication Number: OFR5388 Page: 187-191 Date: 1982
Author: Vos M.A., Abolins T., Smith V.
Publisher Name: Ontario Geological Survey
Location:
Publication - Geology of Canadian Lithium Deposits; Geological Survey of Canada, Economic Geology Report 21
Publication Number: GSC EG 21 Page: 61 Date: 1965
Author: Mulligan, R.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102454
Mono - Pegmatite mineral resources of Ontario
Publication Number: IMR021 Page: 47 Date: 1997
Author: Hewitt D.F.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Crescent Lake area, District of Thunder Bay
Publication Number: R055 Page: 58-59 Date: 1968
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Report of Activities 2016, Resident Geologist Program, Thunder Bay North Regional Resident Geologist Report: Thunder Bay North District
Publication Number: OFR6325 Page: 30-32 Date: 2017
Author: Cundari R.M., Brunelle M.R., White G.D., Tuomi R.D., Tims A.
Publisher Name: Ontario Geological Survey
Location:
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