Ontario Geological Survey
Permanent Link to this Record:
MDI000000001438
| Record Name(s) | Green Lake Group - 1944 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2012-Jul-24 |
| Date Last Modified | 2022-Mar-29 |
| Created By | |
| Revised By |
Primary Commodities: Magnesium Minerals
Township or Area: Olrig, Olrig
Latitude: 46° 17' 56.62" Longitude: -79° 0' 11.21"
UTM Zone: 17 Easting: 653787 Northing: 5129214 UTM Datum: NAD83
Resident Geologist District: Sudbury
NTS Grid: 31L07SW
Point Location Description: approximate centre of claims S32214, S37093, S37049 and S37096
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 Metasedimentary Belt
Terrane: Tomiko
Geological Age: Mesoproterozoic Geochronological Age: 1250 MA Geochron. Age Ref.: OFR5554
| Rock Type | Rank | Composition | Texture | Relationship | Syenitoid-Unsubdivided | 1 | Quartz Monzonite To Monzogranite | Gneissic | Footwall |
|---|---|---|---|---|
| Limestone | 2 | Brucite-Bearing | Host |
Jul 25, 2012 (A Wilson) - Brucite-bearing limestone bodies occur in the vicinity of the southeast corner of claim S32214 near the centre of the claim group.
| 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. Selected grab samples collected by the OGS yielded values ranging from 25-30% brucite.
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:
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: https://doi.org/10.4095/75823
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