Ontario Geological Survey
Permanent Link to this Record:
MDI42D13NE00004
| Record Name(s) | Merkoske - 1984, Tb 746838 - 1991, Halonen - 1980, Pays Plat Fluorite-Barite Occurrence - 1980 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Apr-01 |
| Date Last Modified | 2022-May-06 |
| Created By | |
| Revised By |
Primary Commodities: Amethyst
Secondary Commodities: Barite, Fluorite
Township or Area: Yesno
Latitude: 48° 53' 17.98" Longitude: -87° 36' 59.7"
UTM Zone: 16 Easting: 454801 Northing: 5415225.01 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D13NE
Point Location Description: AMIS location
Location Method: Data Compilation
Access Description: Access is via Highway 17 to a point approximately 3.2 km west of Pays Plat First Nation, and then 100 m south by foot to the showing.
1980: L. Halonen carried out stripping and trenching. 1984: L. Merkoske held the property.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.1362 | 42D13NE0008 | 42D13NE0008 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Geological Age: Archean
Apr 24, 2012 (B Schnieders) - A 1 to 1.5 m wide composite vein, composed of barite, fluorite, quartz and amethyst, strikes 290 degrees, and has a vertical to steep dip to the south. (Schnieders et al., 1996).
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Brt; Fl | Host |
|---|
Apr 29, 2019 (Therese Pettigrew) - The host granite is a pink, biotite-bearing variety and has aplitic and syentic phases. The granite has been altered (silicified and carbonatized) within the contact aureole of the vein (Schneiders et al., 1996).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Amethyst | Economic | Ore | ||||
| 2 | Fluorite | Economic | Ore | ||||
| 3 | Barite | Economic | Ore | ||||
| 1 | Epidote | Economic | Gangue | ||||
| Epidote | Alteration | Epidotization | 1 | Strong | Replacement |
Apr 29, 2019 (Therese Pettigrew) - A 1-1.5 m wide composite vein, composed of barite, fluorite, quartz and amethyst, outcrops on the NE side of a hill consisting of aplite and granite. The vein strikes approx. 290 degrees and has a vertical to steep dip to the south. The vein is very vuggy, containing cavities up to 30 cm in diameter. It is also brecciated, containing fragments of host granitic rock. Quartz, amethyst, and fluorite are the predominate minerals in the vein. Barite is less abundant, being concentrated on the vein walls and particularly on the NE wall. A small vein, 10-15 cm wide and composed entirely of barite, is situated approximately 0.75 m NE of the main vein. The main vein has a crude zonation, with the central part being composed mainly of a breccia containing fragments of the host granite, quartz, and yellow fluorite. On either side of this central zone, quartz and amethyst become more abundant. The quartz and fluorite gradually give way to barite and purple fluorite on the walls of the vein. An open cut 9.8 m high by 1.5 m deep and 1.2 m wide has been excavated on the main vein (Schneiders et al., 1996).
| Rank | Characteristic |
|---|---|
| 2 | Breccia |
| 1 | Vein |
Date: Dec 20, 1996
Geologist: R Degagne
Notes: Visited in July, 1991 by P. Hinz | R. M. Landry (OGS OFR 5889, 1994)
Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District
Publication Number: M2232 Scale: 1:253,440 Date: 1973
Author: Carter M.W., McIlwaine W.H., Wisbey P.A.
Publisher Name: Ontario Division of Mines
Location:
Mono - Industrial Mineral Occurrences and Deposits in Northwest Ontario
Publication Number: OFR5889 Date: 1994
Author: Hinz P., Landry R.M.
Publisher Name: Ontario Geological Survey
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Page: 86-88 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
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