Ontario Geological Survey
Permanent Link to this Record:
MDI52M01SE00008
| Record Name(s) | Golden Arm - 1975 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1979-May-05 |
| Date Last Modified | 2023-Aug-25 |
| Created By | |
| Revised By |
Primary Commodities: Asbestos
Township or Area: Todd
Latitude: 51° 2' 42.1" Longitude: -94° 7' 41.8"
UTM Zone: 15 Easting: 420906.81 Northing: 5655437.75 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52M01SE
Point Location Description: asb symbol on OGS map M2406
Location Method: Data Compilation
No exploration activity related to the asbestos deposit is on record.
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Ultramafic-Unsubdivided | 1 | Contains |
|---|---|---|---|---|
| Gabbro | 2 |
Oct 30, 2020 (Therese Pettigrew) - The Golden Arm intrusive complex is located along the plane created by the Golden Arm - Hammel Lake Fault. The intrusive is generally massive but has same strongly sheared sections indicating it was emplaced during the middle to late stages of the local history. The complex is separated into several blocks by faulting (geophysically interpreted) and intrusive effects. On the west side of Golden Arm, the complex is crudely layered into serpentinized peridotite and an underlying magnetic gabbro. The part of the complex north of the Pipestone - St. Paul feature seems to have reversed layering, although exposure is extremely poor. The portion of the complex beneath Golden Arm is more loosely associated with non-magnetic gabbro. The peridotite is dark green to black in color, contains up to 15% magnetite, and is commonly fine to medium grained. Carbonate alteration is rarely strong and usually nil. Sulphide minerals are not present. Minor amounts of cross fibre asbestos (to 5mm) are recorded in a few outcrops. Some of the sheared outcrops are quite talcose. The gabbro sections are coarse grained with poikilitic mafic phenocrysts to 1 cm. The amount of magnetite in the gabbro is variable and some outcrops are non-magnetic. Plagioclase laths to 6 mm occupy in excess of 10% of the rock (Assessment report 52M01SE0009).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Asbestos | Economic | Ore | ||||
| 2 | Magnetite | Economic | Ore |
Oct 30, 2020 (Therese Pettigrew) - Asbestos stringers up to 1 cm thick have been noted in the ultramafic body west of Golden Arm (Riley, 1975).
Map - Geological series, Todd Township, District of Kenora (Patricia Portion)
Publication Number: P1052 Scale: 1:12,000 Date: 1975
Author: Riley R.A.
Publisher Name: Ontario Division of Mines
Location:
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