Ontario Geological Survey
Permanent Link to this Record:
MDI52F07SW00065
| Record Name(s) | Olsen Bay - 1967 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1976-Oct-22 |
| Date Last Modified | 2022-Aug-05 |
| Created By | |
| Revised By |
Primary Commodities: Molybdenum
Township or Area: Lower Manitou Lake Area
Latitude: 49° 18' 31.19" Longitude: -92° 59' 14.35"
UTM Zone: 15 Easting: 500921.744 Northing: 5461769.366 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F07SW
Point Location Description: Precise
Location Method: Conversion from MDI
Province: Superior
Subprovince: Wabigoon
Terrane: Western Wabigoon
Belt: Eagle-Wabigoon-Manitou
Geological Age: Precambrian
Feb 23, 2010 (C Ravnaas) - Disseminated molybdenite and associated fluorite occurs in quartz and quartzose pegmatite veins and immediately adjacent country rocks within granitic rocks of the Atikwa Batholith at a locality between Kaminni Lake and Olsen Bay, close to the contact with amphibolites at the base of the metavolcanic sequence. Molybdenite has been found in a similar position and association north of the map-area, near Harper Lake (Davies and Pryslak 1967), along the same contact zone, and at other places scattered along the metavolcanic-granite contact zone around the eastern end of the Atikwa Batholith. These occurrences though not in themselves of exploitable dimensions could hypothetically be indicators of possible low grade, large tonnage molybdenum deposits within plutonic rocks of the batholith. If such were the case, it might be expected that plutonic rocks near the molybdenum occurrences in quartz veins would contain at least low amount of molybdenum. As a test of this hypothesis, samples of granitic country rock from near the Kaminni Lake-Olsen Bay occurrence were submitted for qualitative spectrographic analysis to the Mineral Research Branch, Ontario Division of Mines, but yielded no trace of molybdenum. (GR142, p. 73, 74; 1976)
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Molybdenite | Economic | Ore |
Feb 23, 2010 (C Ravnaas) - Disseminated molybdenite and associated fluorite occurs in quartz and quartzose pegmatite veins and immediately adjacent country rocks within granitic rocks of the Atikwa Batholith at a locality between Kaminni Lake and Olsen Bay, close to the contact with amphibolites at the base of the metavolcanic sequence. Molybdenite has been found in a similar position and association north of the map-area, near Harper Lake (Davies and Pryslak 1967), along the same contact zone, and at other places scattered along the metavolcanic-granite contact zone around the eastern end of the Atikwa Batholith. These occurrences though not in themselves of exploitable dimensions could hypothetically be indicators of possible low grade, large tonnage molybdenum deposits within plutonic rocks of the batholith. If such were the case, it might be expected that plutonic rocks near the molybdenum occurrences in quartz veins would contain at least low amount of molybdenum. As a test of this hypothesis, samples of granitic country rock from near the Kaminni Lake-Olsen Bay occurrence were submitted for qualitative spectrographic analysis to the Mineral Research Branch, Ontario Division of Mines, but yielded no trace of molybdenum. (GR142, p. 73, 74; 1976)
MonoMap - Geology of the Lower Manitou-Uphill lakes area, District of Kenora
Publication Number: R142 Page: 73 Date: 1976
Author: Blackburn C.E.
Publisher Name: Ontario Division of Mines
Location:
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