Ontario Geological Survey
Permanent Link to this Record:
MDI52B14SE00015
| Record Name(s) | Heward South - 1992 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1992-Feb-06 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Uranium
Township or Area: Trottier
Latitude: 48° 45' 39.05" Longitude: -91° 8' 23.42"
UTM Zone: 15 Easting: 636703.86 Northing: 5402539.77 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52B14SE
Point Location Description: General
Location Method: Conversion from MDI
1975: Property was staked by W.D. Morehouse
Province: Superior
Subprovince: Quetico
Geological Age: Archean
Jun 21, 2017 (Therese Pettigrew) - The Heward Lake Intrusion is one of the Quetico Intrusions, which are The Quetico Intrusions are a group of small, geochemically primitive, locally Cu-Ni-PGE-rich mafic and ultramafic intrusions closely associated with the margins of the Quetico Batholithic Complex (MacTavish, 1999).
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Host |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Muscovite | Economic | Ore |
Jun 21, 2017 (Therese Pettigrew) - Minor yellow staining on feldspar and thin coatings on small fractures within the large muscovite graphic granite pegmatite sheet at the south end of Heward Lake were discovered by W.D. Morehouse. It is likely that these are derived from weathering of primary uranium minerals, although none were observed by the field party in 1975. Isolated points along fractures gave geiger counter readings as high as one hundred times background (Pirie, 1978).
Map - Crooked Pine Lake, Rainy River District
Publication Number: M2405 Scale: 1:31,680 Date: 1978
Author: Pirie J.
Publisher Name: Ontario Geological Survey
Location:
MonoMap - Geology of the Crooked Pine Lake area, District of Rainy River
Publication Number: R179 Scale: Date: 1978
Author: Pirie J.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Thunder Bay South Resident Geologist District Office