Ontario Geological Survey
Permanent Link to this Record:
MDI31L07SW00003
| Record Name(s) | James Lake Group - 1944 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 1982-Mar-04 |
| Date Last Modified | 2022-Mar-29 |
| Created By | |
| Revised By |
Primary Commodities: Magnesium Minerals
Township or Area: Olrig, Olrig
Latitude: 46° 17' 36.32" Longitude: -78° 59' 46.01"
UTM Zone: 17 Easting: 654342 Northing: 5128601 UTM Datum: NAD83
Resident Geologist District: Sudbury
NTS Grid: 31L07SW
Point Location Description: approximate centre of claims S33464 to 33466 and 37048
Location Method: Data Compilation
Access Description: Turn off highway 17 at Rutherglen and travel north. Take first left turn toward Blanchard's Landing. Travel by boat across river to point directly south of Shields Bay. Traverse past cottages 830m along ATV trail. Foot traverse south through bush to trenches.
1943-44: Aluminum Company of Canada Limited - DD
Province: Grenville
Subprovince: Central Gneiss Belt
Terrane: Tomiko
Geological Age: Mesoproterozoic Geochronological Age: 1250 Ma Geochron. Age Ref.: OFR5554
| Rock Type | Rank | Composition | Texture | Relationship | Quartz Monzonite | 1 | Quartz Monzonite To Monzogranite | Gneissic | Footwall |
|---|---|---|---|---|
| Limestone | 2 | Brucite-Bearing | Host |
Jul 25, 2012 (A Wilson) - There are three main brucite-bearing bodies of limestone on this property. The largest is a belt, up to 5 chains in width, which extends westward and northwestward from the southeast to the arm of James Lake to the west boundary of claim S 33464. Much of the belt contains only small amounts of brucite but a band forming the south margin and having a width of more than 100 feet appears to contain substantial amounts of brucite.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Brucite | Economic | Ore |
Jul 25, 2012 (A Wilson) - The brucite is semi-translucent, white, cream, brown and grey granules from 1-4 mm in diameter, disseminated through a matrix of white dolomite and white calcite. .At selected places on claims S33466 and S33464, the rock coarse brucite comprises 25% of the rock. This property has a “substantial”, but undefined tonnage of brucite. The brucite ranges from approximately11-23%. Selected grab samples collected by the OGS yielded values ranging from 25-30% brucite. The limestone body along the northwest shore of James Lake contains only very small scattered lenses of brucite, all of which appear to be low grade. The brucite-bearing band of limestone on the south shore of Brucite Lake is several hundred feet long.
Publication - Limestones of Canada, their occurrence and characteristics, part IV, Ontario
Publication Number: CMB Pub 781 Scale: Date: 1938
Author: Goudge, M F
Publisher Name: Canada Mines Branch
Location:
Part - Geology of the Mattawan-Olrig area
Publication Number: ARV53-06.001 Scale: Date: 1997
Author: Harding W.D.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Mattawan-Olrig area, District of Nipissing, Ontario
Publication Number: ARM53D Scale: 1:63,360 Date: 1997
Author: Harding W.D.
Publisher Name: Ontario Dept. of Mines
Location:
Map - Precambrian Geology, Songris Area
Publication Number: P2847 Scale: 1:50,000 Date: 2006
Author: Easton R.M.
Publisher Name: Ontario Geological Survey
Location:
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