Ontario Geological Survey
Permanent Link to this Record:
MDI52A10NE00042
| Record Name(s) | Thibault Amethyst - 1998 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1999-Aug-30 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Amethyst
Township or Area: McTavish
Latitude: 48° 41' 5.26" Longitude: -88° 37' 50.65"
UTM Zone: 16 Easting: 379975 Northing: 5393700 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A10NE
Point Location Description: Map in Assessment report 52A10NE2003
Location Method: Based on Assessment
1998: D. Tibault carried out stripping. 2002-03: T. Stone and A. Stone carried out stripping, trenching, and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.18623 | 52A10NE2003 | 52A10NE2003 |
| 2.26580 | 52A10NE2016 | 52A10NE2016 |
Province: Southern
Subprovince: Nipigon Basin
Formation Group: Sibley Group
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Terrigenous-Clastic-Unsubdivided | 1 | Host |
|---|---|---|---|---|
| Granite | 2 | |||
| Vein | 3 | Amethyst | Is |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Amethyst | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Galena | Economic | Ore | ||||
| 4 | Chalcocite | Economic | Ore | ||||
| 5 | Bornite | Economic | Ore | ||||
| 1 | Calcite | Economic | Gangue |
Feb 25, 2020 (Andrew Tims) - The amethyst vein consist of a breccia altered Sibley siltstone and mudstone cemented together in a calcite matrix. Very minor amounts of Au, Ag, Ba, Gr, Cu, Pe, Mo, Pb, and Zn are present. The amethyst forms in vugs that are filled with barite mud and the crystals are small and ropy with colours ranging from lavender, purple, blue, reds, and blacks. The contact rock on ether side of the vein is granite.
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:
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office