Ontario Geological Survey
Permanent Link to this Record:
MDI52A10NE00031
| Record Name(s) | Bowker - 1971 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-22 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Amethyst
Secondary Commodities: Copper, Lead
Township or Area: McTavish
Latitude: 48° 43' 3.57" Longitude: -88° 37' 26.19"
UTM Zone: 16 Easting: 380553 Northing: 5397342 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A10NE
Point Location Description: From OGS map P0721
Location Method: Data Compilation
No assessment reports were found on file.
Province: Southern
Subprovince: Nipigon Basin
Formation Group: Sibley Group
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Is |
|---|---|---|---|---|
| Terrigenous-Clastic-Unsubdivided | 2 | |||
| Granite | 3 |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Amethyst | Economic | Ore | ||||
| 2 | Galena | Economic | Ore | ||||
| 3 | Chalcopyrite | Economic | Ore | ||||
| 4 | Pyrite | Economic | Ore | ||||
| 5 | Sphalerite | Economic | Ore |
Feb 25, 2020 (Therese Pettigrew) - The showings occur in veins in or near granitic rocks of Archean age. The mineralization is associated with Late Precambrian faulting and is common at the contact between Archean felsic rocks and Sibley Group sediments. The amethyst occurs in quartz veins 2 to 3 inches wide. These veins are vertical and often enclose vugs about 1 foot wide. Other minerals associated with these veins are galena, chalcopyrite and sphalerite. The amethyst is deep purple and some crystals are coated with hematite (Vos et al., 1982).
Map - Geological series, McTavish Township (east part of north half), District of Thunder Bay
Publication Number: P0721 Scale: 1:15,840 Date: 1997
Author: McIlwaine W.H.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
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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