Ontario Geological Survey
Permanent Link to this Record:
MDI52I10SW00019
| Record Name(s) | Lett Deposit - 1956, J.H. Forbes - 1981 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1985-Jun-25 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Silver, Zinc, Gold
Secondary Commodities: Lead
Township or Area: Linklater Lake Area
Latitude: 50° 31' 53.68" Longitude: -88° 54' 59.03"
UTM Zone: 16 Easting: 364182.53 Northing: 5599490.29 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52I10SW
Point Location Description: Precise
Location Method: Conversion from MDI
1956: Noranda Mines Ltd. optioned the property from S.M. Lett and carried out a ground EM survey and a reconnaissance geological survey. 1970: Carbec Mines Ltd. carried out sampling and mag surveys. 1981: J.H. Forbes drilled 4 DDH totalling 99.3 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 24 | 52I10SW0013 | 52I10SW0013 |
| 63.780 | 52I10SW0019 | 52I10SW0019 |
| 2.88 | 52I10SW0016 | 52I10SW0016 |
Province: Superior
Subprovince: Wabigoon
Belt: Caribou Lake
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Mylonite/Fault Gouge/Pseudotachylite | 1 | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | |||
| Vein | 3 | Quartz | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Sphalerite | Economic | Ore | ||||
| 4 | Azurite | Economic | Ore | ||||
| 5 | Malachite | Economic | Ore | ||||
| 6 | Galena | Economic | Ore |
Apr 10, 2019 (Therese Pettigrew) - Mineralization is concentrated in a 100-foot wide mylonite zone striking NE and dipping 70SE. This zone cuts mafic volcanic and tuffaceous rocks which strike ENE and dip to the SSE. Within the mylonite zone, the mineralization is localized in quartz stockworks and individual quartz veins 0.25-2 inches wide. Quartz veins also occur in places in the volcanic rocks. Mineralization is sparse and consists of scatter grains of pyrite with traces of chalcopyrite and sphalerite. Malachite and azurite are developed along fractures. Grab samples taken by OGS staff P.C. Thurston and M.W. Carter during a property visit returned results of up to 0.33% Cu, 0.16% Zn, and 0.01 oz/t Au (Thurston and Carter, 1970). Samples collected by Carbec Mines in 1970 returned values of 0.11 oz/t Au, 19.25 oz/t Ag, 5.84% Cu, 1.07% Zn, 2.58% Pb (Assessment file 52I10SW0016).
Mono - Operation Fort Hope
Publication Number: MP042 Scale: Date: 1970
Author: Thurston P.C., Carter M.W.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
Location:
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