Ontario Geological Survey
Permanent Link to this Record:
MDI42C12NW00013
| Record Name(s) | Herrick Showing - 1949, Lake Superior Uranium Occurrence - 1991, Pricemore Resources - 1983, 117454 Canada Ltd. - 1991, Hemlo Uranium Occurrence - 1949 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1991-Mar-26 |
| Date Last Modified | 2022-Mar-04 |
| Created By | |
| Revised By |
Primary Commodities: Uranium
Township or Area: Bomby
Latitude: 48° 40' 26.77" Longitude: -85° 54' 16.09"
UTM Zone: 16 Easting: 580650.71 Northing: 5391807.48 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42C12NW
Point Location Description: General
Location Method: Conversion from MDI
Access Description: This occurrence is located approximately 1.8 km south of Highway 17 at a point where the creek flowing into Moose Lake (42C12/NW) crosses the highway in Bomby Township.
1949: Lake Superior Mining Corporation Ltd. staked the ground and conducted geological surveying.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| FN63A.43 |
Jun 21, 2017 (Therese Pettigrew) - 06/16/2017 (T Pettigrew) – A well-developed regional fault occurs along the contact between quartzites and mafic volcanics and has been intruded by feldspar porphyries. Later fracturing produced a means for mineralization carrying radioactive material (Page, 1949).
| Rock Type | Rank | Composition | Texture | Relationship | Quartz Arenite | 1 | Adjacent |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Uraninite | Economic | Ore |
Jun 21, 2017 (Therese Pettigrew) - This showing consists of radioactive fractures cutting quartzites and mafic volcanics that have been intruded by feldspar porphyries. A regional fault occurs at the contact between the quartzites and the volcanics. Host rocks are intensely oxidized and disintegrated. Five definite veins were localized within a 50 foot section. No uranium assays were reported, but geiger counter readings of up to 25 times background occur over the showing area. Uranium staining is present (Scott, 1987). Lang (1952) states that “The Northern Miner stated in its issue of June 9, 1949, that five parallel radioactive zones had been found along a contact between biotite granite and greenstone, and that anomalies upt o ten times background had been obetained. Two samples sent to the Geological Survey showed 0.06 R and 0.09 R” where 0.06 R stands for 0.06% U3O8 equivalent, determined by radiometric test.
MonoMap - Geology of the Hemlo area, District of Thunder Bay
Publication Number: R217 Scale: Date: 1982
Author: Muir T.L.
Publisher Name: Ontario Geological Survey
Location:
Publication - Canadian deposits of uranium and thorium; Geological Survey of Canada, Economic Geology Series 16
Publication Number: GSC EconGeol 16 Scale: Date: 1952
Author: Lang, A.H.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/102450
Mono - Uranium occurrences of the Thunder Bay-Nipigon-Marathon area
Publication Number: OFR5634 Scale: Date: 1987
Author: Scott J.F.
Publisher Name: Ontario Geological Survey
Location:
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