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Ontario Geological Survey
Permanent Link to this Record:
MDI52A10SW00038
| Record Name(s) | Purple Haze Mine - 1994, M. Grieve and Family Mine - 1994 |
|---|---|
| Related Record Type | Simple |
| Record Status | Producing Mine |
| Date Created | 1999-Aug-30 |
| Date Last Modified | 2021-Dec-14 |
| Created By | A Wilson |
| Revised By | Therese Pettigrew |
Primary Commodities: Amethyst, Mineral Specimen
Township or Area: Tartan Lake Area
Latitude: 48° 37' 26.39" Longitude: -88° 56' 46.96"
UTM Zone: 16 Easting: 356572 Northing: 5387487 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A10SW
Point Location Description: pit
Location Method: Field Visit with GPS
Access Description: Access to mining lease TB656461 (Tartan Lake sheet, G-2706) is gained by traveling north of Thunder Bay, Ontario, via highway 527, to the Magone Road. Magone Road is followed easterly for approximately 13km, at which point a branch road leads toward the claim group.
1967-82: Various prospectors staked and prospected the showing. 1982: M. Grieve staked the property. 1992-1995: Grieve completed manual stripping, trenching, washing and blasting. 1998: M. Grieve carried out stripping, blasting, and trenching. 2001-3: M. Grieve carried out stripping and trenching. 2005-2006: Manual stripping and trenching. 2007: the 21-year lease 656461 renewed. 2012: M. Grieve carried out stripping and trenching. 2016: M. Grieve deceased. S. Grieve invested with 100% ownership. Quarry operated under the authority of MNR Aggregate Permit No.624879, which allows for the extraction of up to 100 t/year from a licenced area of 138 ha under the name of Magone Amethyst Quarry.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.15725 | 52A10NW0015 | 52A10NW0015 |
| 2.33590 | 20000001802 | 20000001802 |
| 2.19790 | 52A10NW2005 | 52A10NW2005 |
| 2.15719 | 52A10NW0016 | 52A10NW0016 |
| 2.27361 | 52A10NW2019 | 52A10NW2019 |
| 2.24633 | 52A10NW2014 | 52A10NW2014 |
| 2.27360 | 52A10NW2018 | 52A10NW2018 |
| 2.24031 | 52A10NW2013 | 52A10NW2013 |
| 2.53822 | 20000008837 | 20000008837 |
| 63.6050 | 52A10SW0002 | 52A10SW0002 |
| 2.30591 | 20000000657 | 20000000657 |
Province: Superior
Subprovince: Quetico
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Granite | 1 | Host |
|---|---|---|---|---|
| Vein | 2 | Is |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Amethyst | Economic | Ore |
Mar 10, 2020 (Andrew Tims) - The amethyst mineralization occurs in silicified, brecciated zones associated with east-west trending faults and contacts within granite of the Penassen Lake Stock. It would appear that a contact between barren granite and the mineralized granite and amethyst breccia/massive vein amethyst has been identified on the north edge of the work area.
Mar 10, 2020 (Therese Pettigrew) - Amethyst veins occur within Archean Penassen granite, which is a dark pink, very uniform rock. The amethyst is in massive veins, which strike at 90 degrees. The system can be traced along strike for about 200 m. The vein, where exposed, is about 15 m wide. The main breccia zone strikes at 250 degrees Amethyst varies in colour from dark purple to green, and the massive amethyst is finely banded (Thunder Bay office RGP mineral deposit files). Bugs and open spaces within the veins are lined with amethyst points up to 6 cm in diameter. Dark, almost black amethyst occurs in places where black, radioactive minerals are visible in the granite. Near the veins, the granite has been altered to light cream colour due to kaolinization of the feldspar. Quartz veining is very prominent to the point of silica flooding; in some outcrops anastomosing quartz veins completely mask the rock (Garland, 1994).
Map - Loon Lake area, Gunflint iron range, District of Thunder Bay
Publication Number: M1960P Scale: 1:31,680 Date: 1997
Author: Moorhouse W.W.
Publisher Name: Ontario Dept. of Mines
Mono - Amethyst in the Thunder Bay Area
Publication Number: OFR5891 Scale: Date: 1994
Author: Garland M.I.
Publisher Name: Ontario Geological Survey
Map - Black Bay sheet, District of Thunder Bay, geological compilation series
Publication Number: P0358 Scale: 1:126,720 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office