Ontario Geological Survey
Permanent Link to this Record:
MDI52I08NW00021
| Record Name(s) | Dempster L28 Deposit - 1958, Zig Zag Lake - 1958 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-15 |
| Date Last Modified | 2022-Apr-27 |
| Created By | |
| Revised By |
Primary Commodities: Lithium
Secondary Commodities: Cesium, Tantalum
Township or Area: Crescent Lake Area
Latitude: 50° 26' 48.74" Longitude: -88° 19' 11.02"
UTM Zone: 16 Easting: 406300 Northing: 5589150 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, sampling, stripping, trench mapping, and drilling, including 6 DDH on the L61 showing.
| 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
Mar 07, 2014 (A Wilson) - The Zigzag Lake lithium deposits are a group of pegmatite dikes which lie along the south boundary of a two mile wide belt of Keewatin-type, predominantly andesitic metavolcanics, part of the Marshall Lake Group, which are intruded on either side by Algoman-type granite.
| Rock Type | Rank | Composition | Texture | Relationship | Gneiss-Unsubdivided | 1 | Granite | Adjacent |
|---|---|---|---|---|
| Pegmatite | 2 | Is |
Mar 07, 2014 (A Wilson) - This deposit, in granite gneiss, strikes N65°E for a known length of 40 feet and is up to 15 feet wide. It lies approximately 1219 m southwest of the western extremity of the Tebishogeshik deposit.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Spodumene | Economic | Ore | ||||
| 2 | Muscovite | Economic | Gangue |
Mar 07, 2014 (A Wilson) - The mineralogy is similar to the Tebishogeshik deposit in mineralogical composition, containing prismatic spodumene crystals up to about 4 inches in length. Much of the spodumene has been partially altered to pale-green muscovite, however, and the pegmatite has been replaced to a large extent by aplite, such that the latter makes up over 30% of the outcrop.
Apr 10, 2019 (Therese Pettigrew) - Sample 1123957 collected by Sovereign Gold Company in 2016 returned an assay of 1.08% Li2O (Sovereign Gold Company press release, Nov 15, 2016).
| 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:
MonoMap - Geology of the Crescent Lake area, District of Thunder Bay
Publication Number: R055 Page: 58 Date: 1968
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: GSC EG 21 Page: 62 Date: 1965
Author: Mulligan, R.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102454
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:
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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