Ontario Geological Survey
Permanent Link to this Record:
MDI52F03NE00004
| Record Name(s) | Austin - 1940 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1990-Dec-08 |
| Date Last Modified | 2023-Jul-04 |
| Created By | |
| Revised By |
Primary Commodities: Antimony
Secondary Commodities: Gold
Township or Area: Napanee Lake Area
Latitude: 49° 7' 47.78" Longitude: -93° 12' 34.51"
UTM Zone: 15 Easting: 484710.251 Northing: 5441921.782 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F03NE
Point Location Description: General
Location Method: Conversion from MDI
Access Description: The occurrence is located 76 km south-southwest of Dryden, on the narrow strip of land between the south of Manitou Stretch and Adams Lake, a small lake on Mister Creek. Road access to the occurrence is from Hwy 502, along the Cedar Narrows Road to the landing on to Manitou Stretch. A short boat trip of about 12 km reaches the occurrence. Two trenches expose the quartz vein and it can be traced on a cliff face to the west, about 180 m northwest of the largest inlet of Adam Bay. (OFR 5731, p. 27)
1940: Discovery of antimony by Fred Austin. 1942: Austin Antimony Syndicate diamond drilled 6 holes for a total of 208.6 m. The best intersection analysed 2.292 antimony (Assessment Files, Resident Geologist's Office, Kenora). 1983-1984: Noranda Exploration performed geological mapping, ground magnetic and IP surveys and rock and humus geochemical surveys. 1984-1985: Agassi Resources Ltd. undertook geological mapping and took a few 28 grab samples for gold and antimony.
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Eagle-Wabigoon-Manitou
Geological Age: Precambrian
Feb 18, 2010 (C Ravnaas) - The occurrence lies within a dacitic crystal tuff. Immediately to the south, a wide quartz porphyry outcrops (Smith and Stephenson 1989). The area is moderate as sheared at 090° with shallow to moderate dip, from 38° to 70°, to the north. Alteration products are sericite, quartz, potash feldspar, and sulphides. The steep lineation plunging 67° to the east, and the folds in the vein observed in the cliff face suggests north-side-up, dip-slip shear. The width of the vein varies from 9 to 80 cm. It is exposed discontinuously over 76 metres. The quartz vein material is fractured, medium to dark grey, opaque to cloudy, and in some places semi-translucent. Accessory minerals are sericite and minor ankerite and muscovite. Stibnite is the predominant sulphide. It occurs as a semi-massive band, l to 6 cm wide, near the vein contact within the wall rock, or disseminated throughout the quartz vein and the wall rock in amounts up to 2%. Pyrite and arsenopyrite occur in amounts of less than 1% in the wall rock. Eight samples were taken by the author. Despite the presence of appreciable amounts of antimony (up to 102 detected on analysis), gold values obtained on analysis were low, and showed no correlation with antimony. (OFR 5731, p. 27-31)
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Arsenopyrite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Stibnite | Economic | Ore |
Feb 18, 2010 (C Ravnaas) - 1940: A sample from the main pit returned 3.742% antimony over 3.2 feet on analysis (Assessment Files, Resident Geologist's Office, Kenora). 1983: samples returned less than 10 ppb Au. 1985: Gold ranged from 1 to 99 ppb while antimony was 625 ppm to 20,000 ppb (Assessment Files, Resident Geologist's Office, Kenora). (OFR 5731, p. 28,29)
Mono - Gold deposits of the Kenora-Fort Frances area, districts of Kenora and Rainy River
Publication Number: MDC016 Page: 7 Date: 1976
Author: Beard R.C., Garratt G.L.
Publisher Name: Ontario Division of Mines
Location:
Article - Geology of the Vista Lake area, districts of Rainy River and Kenora
Publication Number: MP141.019 Page: 138-144 Date: 1997
Author: Smith P.M., Stephenson C.D.
Publisher Name: Ontario Geological Survey
Location:
Mono - Property visits by the Dryden area mineral commodity geologist, 1989
Publication Number: OFR5731 Page: 27-31 Date: 1990
Author: Delisle P.C.
Publisher Name: Ontario Geological Survey
Location:
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