Ontario Geological Survey
Permanent Link to this Record:
MDI52A10NE00037
| Record Name(s) | Breezy Mountain - 1988, Breezy Lake - 1986 |
|---|---|
| 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, Zinc, Lead
Township or Area: McTavish
Latitude: 48° 41' 40.43" Longitude: -88° 41' 2.3"
UTM Zone: 16 Easting: 376081 Northing: 5394871 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A10NE
Point Location Description: From map in AFRI 2.11833
Location Method: Conversion from MDI
1978: M.W. Rennick carried out geological mapping, radiometric and geochemical surveys while exploring for uranium. 1986: T. Twomey conducted ground magnetometer and VLF-EM surveys. 1988: T. Twomey, carried out geological and radiometric surveys. 1989: T. Twomey carried out overburden stripping. 1990: T. Twomey carried out prospecting and overburden stripping.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.11833 | 52A10NE0020 | 52A10NE0020 |
| 2.9653 | 52A10NE0023 | 52A10NE0023 |
| 2.2840 | 52A10NE0028 | 52A10NE0028 |
| 63.5569 | 52A10NE0013 | 52A10NE0013 |
| 63.5809 | 52A10NE0001 | 52A10NE0001 |
| 2.13829 | 52A10NE0008 | 52A10NE0008 |
Province: Superior
Subprovince: Quetico
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Granite | 1 | Host |
|---|---|---|---|---|
| Diabase | 2 | Diabase | Near | |
| Sandstone | 3 | Adjacent | ||
| Vein | 4 | Amethystine Quartz | Is |
Jun 01, 2018 (Therese Pettigrew) - The amethyst and breccia zone are situated at the base of a prominent Archean granite cliff. The zone and cliff strike at 050 degrees. The granite is pink, medium-grained, massive, and highly altered to kaolin next to the breccia zone. The breccia zone is 5 m wide. Fragments are large, 1-1.5 m to pebble-sized, and very angular. Rock types showing up as fragments are pink granite, altered granite, Sibley mudstone, and dark grey metasediments. Quartz, in anastomosing veinlets, cuts the breccia and the fragments, indicating several stages of fracturing and deposition. Angular vugs, which can be up to 1 m wide, are lined with red, hematite-coated amethyst (Garland, 1994).
| 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 | Sphalerite | Economic | Ore |
Jun 01, 2018 (Therese Pettigrew) - Ametystine quartz veins are found within the keel of sandstone as well as along the fault margin of the granite. The best showing is just east of L 1+00E, 0+80N, which consists of faulted red sandstone containing quartz stringers and numerous vugs, up to 0.5 m in diameter, lined with amethyst (AFRI 52A10NE0020).
| Rank | Classification |
|---|---|
| 1 | Vein |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Mono - Amethyst deposits of Ontario
Publication Number: GB05 Scale: Date: 1998
Author: Vos M.A.
Publisher Name: Ontario Division of Mines
Location:
Mono - Amethyst in the Thunder Bay Area
Publication Number: OFR5891 Scale: Date: 1994
Author: Garland M.I.
Publisher Name: Ontario Geological Survey
Location:
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