Ontario Geological Survey
Permanent Link to this Record:
MDI000000003188
| Record Name(s) | Whitecap - 2021, Allison Lake North Property - 2021, Peg Lake - 2003 |
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| Related Record Type | |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 2022-Oct-12 |
| Date Last Modified | 2023-Apr-18 |
| Created By | |
| Revised By |
Primary Commodities: Lithium, Rubidium, Tantalum, Niobium
Secondary Commodities: Gallium
Township or Area: Costello
Latitude: 51° 7' 27.37" Longitude: -92° 23' 50.69"
UTM Zone: 15 Easting: 542170 Northing: 5663817 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52N01SW
Point Location Description: Location from map in Portofino Resources news release Sept 7, 2021
Location Method: Data Compilation
2021: Portofino Resources acquired the property and carried out prospecting and sampling. 2022: Portofino carried out a high-resolution magnetic heli-borne survey.
Province: Superior
Subprovince: Uchi
Domain: Uchi
Geological Age: Archean
Oct 12, 2022 (Therese Pettigrew) - The property is positioned along the contact between the Allison Lake pegmatite granite batholith and the Jubilee Lake metasedimentary rocks of the Uchi Subprovince in northwestern Ontario. The Allison Lake batholith is a strongly evolved peraluminous granitic body that contains highly anomalous rare-element mineralization along its outer rim.
| Rock Type | Rank | Composition | Texture | Relationship | Pegmatite | 1 | Is |
|---|---|---|---|---|
| Granite | 2 |
Oct 12, 2022 (Therese Pettigrew) - Samples collected by the OGS along the power line cut returned 190 ppm Li from a biotite granite and 154 ppm Li from a muscovite-garnet leucogranite (MRD111). Sampling by Portofino Resources in 2021 returned up to 398 ppm Li, 857 ppm Rb, 57.1 ppm Ga, 76 ppm Ta, 118 ppm Nb (Portofino Resources Oct 3, 2022 news release).
Data - Electron Microprobe and Bulk Analyses of Fertile Peraluminous Granites and Related Rare-element Pegmatites, Superior Province, Northwest and Northeast Ontario: Operation Treasure Hunt
Publication Number: MRD111 Date: 2002
Author: Tindle A.G., Selway J.B., Breaks F.W.
Publisher Name: Ontario Geological Survey
Location:
Mono - Fertile Peraluminous Granites and Related Rare-Element Mineralization in Pegmatites, Superior Province, Northwest and Northeast Ontario: Operation Treasure Hunt
Publication Number: OFR6099 Date: 2003
Author: Breaks F.W., Selway J.B., Tindle A.G.
Publisher Name: Ontario Geological Survey
Location:
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For detailed information regarding this mineral record please contact the Red Lake Resident Geologist District Office