Ontario Geological Survey
Permanent Link to this Record:
MDI52I08NW00014
| Record Name(s) | Chappais Lake Lithium Deposit - 1959 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1983-Sep-12 |
| Date Last Modified | 2022-Feb-18 |
| Created By | |
| Revised By |
Primary Commodities: Lithium
Township or Area: Crescent Lake Area
Latitude: 50° 26' 21.36" Longitude: -88° 20' 37.72"
UTM Zone: 16 Easting: 404575 Northing: 5588335 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52I08NW
Point Location Description: Location from map on p. 31 of OFR6325
Location Method: Data Compilation
Access Description: The pegmatite dike is 400 feet southeast of a small pond located about 1 1/2 miles east of the south end of Chappais Lake, approximately 32 miles east of Armstrong. Chappais Lake is accessible by float plane from Armstrong.
1957: Dempster Mines Ltd. conducted prospecting. 1958: Dempster Exploration Ltd. drilled 6 DDH totalling 91 m. 1979-80: Cominco Limited carried out soil sampling, prospecting, geochemistry, ground geophysics. 2016: Sovereign Gold Company Ltd. optioned the property and conducted prospecting, sampling, stripping, trench mapping, and drilled 5 DDH.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63A.352 | 52I08NW0028 | 52I08NW0028 |
| 2.3207 | 52I08NE0006 | 52I08NE0006 |
| 2.3304 | 52I08NW0004 | 52I08NW0004 |
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 dike strikes east and dips 60°S and is exposed in one outcrop that is 60 ft. long and up to 30 ft. wide. At the west end of the outcrop, the dike splits and is represented by two tongues separated by a thin wedge of granite gneiss.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Spodumene | Economic | Ore |
Mar 07, 2014 (A Wilson) - The dike contains 15-20% pale grey spodumene as prismatic crystal s up to 8 inches in length associated with potash feldspar, quartz, albite and muscovite. The highest Li grades returned from the Cominico geochemical survey were 29 ppm.
Apr 10, 2019 (Robert Cundari) - Sovereign completed 5 diamond-drill holes at the Chappais Lake occurrence, designed to test the extent and continuity of lithium mineralization through the pegmatite dyke. Three holes (CL-16-01, -02 and -03) were positioned at the southern end of the dyke and were drilled across the width of the dyke. Hole CL-16-10 was drilled in a down-dip direction to test Li2O distribution within the dyke. Hole CL-16-11 was completed as a step-out hole 50 m southwest of the main showing. The following are the most significant results from the Chappais Lake property: DDH CL-16-01 = 2.01% Li2O over 0.7 m, DDH CL-16-02 =0.45% Li2O over 1.0 m, DDH CL-16-03 = 1.09% Li2O over 1.0 m (Cundari et al., 2017).
| Rank | Classification |
|---|---|
| 1 | Pegmatite |
Mono - Report of Activities 2016, Resident Geologist Program, Thunder Bay North Regional Resident Geologist Report: Thunder Bay North District
Publication Number: OFR6325 Scale: Date: 2017
Author: Cundari R.M., Brunelle M.R., White G.D., Tuomi R.D., Tims A.
Publisher Name: Ontario Geological Survey
Location:
Mono - Pegmatite mineral resources of Ontario
Publication Number: IMR021 Scale: 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 Scale: Date: 1968
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Crescent Lake area, Thunder Bay District
Publication Number: M2100 Scale: Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Industrial minerals of northern Ontario-supplement 1
Publication Number: OFR5388 Scale: Date: 1982
Author: Vos M.A., Abolins T., Smith V.
Publisher Name: Ontario Geological Survey
Location:
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