Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42A09NW00003

Record: MDI42A09NW00003

General

Mineral Record Identification
Record Name(s) Falls - 1981, Twin Falls Syndicate - 1981
Related Record Type Simple
Related Record(s)
Record Status Occurrence
Date Created 1981-Feb-17
Date Last Modified 2023-Jan-19
Created By
Revised By

Commodities

Primary Commodities: Gold



Location

Township or Area: Coulson

Latitude: 48° 42' 28.37"    Longitude: -80° 22' 21.57"

UTM Zone: 17    Easting: 546152.983   Northing: 5395172.839    UTM Datum: NAD83

Resident Geologist District: Kirkland Lake

NTS Grid: 42A09NW

Point Location Description: Rapids.

Location Method: Conversion from MDI



Exploration History

1965: Twin Falls Syndicate completed a geophysical survey and follow-up ground electromagnetic and magnetic surveys. Three holes totalling at least 260 m were diamond drilled; no assay data from these holes are reported. 1985: Comstate Resources Ltd. prospected the area. No reported assay value was greater than 10 ppb of gold.


Assessment Work on File

Assessment Work on File
Office File Number Online Assessment File Identifier Online Assessment File Directory
KL-2741, 63.1708 42A10NE0312 42A10NE0312
10 42A09NW0569 42A09NW0569

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Abitibi

Tectonic Assemblage: Stoughton-Roquemaure

Geological Age: Archean  

Metamorphism Grade: Greenschist



Lithology

Lithology Data
Rock Type Rank Composition Texture Relationship
Vein 1 Contains
Terrigenous-Clastic-Unsubdivided 2 Near
Intermediate lava flow-unsubdivided 3 Andesite Near

Mineralization Comments

Dec 07, 2005 (C Salo) - Exploration was concentrated along the faulted contact between weakly metamorphosed (greenschist or lower metamorphic facies) carbonatized feldspar phyric andesite and sediments where the contact is exposed along the Shallow River in the north half of the north half of lot 8, concession VI, Coulson Township (Leahy and Ginn 1962, Johnstone 1986, Jensen and Baker 1986, Gupta and Johnstone 1987, Johnstone and Steele 1989). No reported gold assays are greater than 0.01 ounce of gold per ton.



Mineral Record Details

References

File - Resident Geologist file KL-0551

Publication Number: Date:

Author:

Publisher Name:

Location: Kirkland Lake RGP office


Map - Geological series, preliminary results of bedrock samples from the sonic drilling, 1985, Lake Abitibi-Matheson area, District of Cochrane

Publication Number: P2986 Scale: 1:100,000    Date: 1986

Author: Jensen L.S., Steele K.G., McClenaghan M.B., Baker C.L.

Publisher Name: Ontario Geological Survey

Location:


Map - Black River-Matheson Area

Publication Number: OFM0050 Scale: 1:15,840    Date: 1986

Author: Johnstone R.M.

Publisher Name:

Location:


Map - Geological series, bedrock samples from the sonic drilling program 1987, Matheson area, District of Cochrane

Publication Number: P3114 Scale: 1:100,000    Date: 1989

Author: Johnstone R.M., Sutcliffe R.H., Steele K.G., Baker C.L., McClenaghan M.B.

Publisher Name: Ontario Geological Survey

Location:


Folio - Coulson Township, District of Cochrane

Publication Number: GDIF369 Date: 1997

Author: Kirkland Lake RGO

Publisher Name: Ontario Geological Survey

Location:


Map - Wilkie Township, District of Cochrane

Publication Number: P0156 Scale: 1:15,840    Date: 1997

Author: Leahy E.J., Ginn R.M.

Publisher Name: Ontario Dept. of Mines

Location:


Map - Geophysical/geochemical series, Matheson-Black River area, Coulson Township, airborne electromagnetic survey, total intensity magnetic survey, District of Cochrane

Publication Number: M80575 Scale: 1:20,000    Date: 1984

Author: Questor Surveys Ltd.

Publisher Name: Ontario Geological Survey

Location:


Mono - Mineral occurrences, deposits, and mines of the Black River-Matheson area

Publication Number: OFR5735 Page: 1257-1258  Date: 1990

Author: Bath A.C.

Publisher Name: Ontario Geological Survey

Location:


Article - Black River-Matheson economic geologist program

Publication Number: MP126.058S Page: 301-311  Date: 1997

Author: Bath A.C.

Publisher Name: Ontario Geological Survey

Location:


Map - Coulson Township, District of Cochrane

Publication Number: P0157 Scale: 1:15,840    Date: 1997

Author: Leahy E.J., Ginn R.M.

Publisher Name: Ontario Dept. of Mines

Location:


Article - A gravity survey in the Iroquois Falls-Lake Abitibi area, District of Cochrane

Publication Number: MP137.074 Page: 411-14  Date: 1997

Author: Gupta V.K., Johnstone R.M.

Publisher Name: Ontario Geological Survey

Location:


Article - Precambrian geology of Coulson, Warden, and Milligan townships, Black River-Matheson (BRIM) area, District of Cochrane

Publication Number: MP132.079 Page: 392-397  Date: 1997

Author: Johnstone R.M.

Publisher Name: Ontario Geological Survey

Location:


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For detailed information regarding this mineral record please contact the Kirkland Lake Resident Geologist District Office