Ontario Geological Survey
Permanent Link to this Record:
MDI53B02NW00006
| Record Name(s) | Horseshoe Lake-Sulphide Zone - 1985 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1985-Jul-29 |
| Date Last Modified | 2022-May-30 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Secondary Commodities: Copper
Township or Area: Kecheokagan Lake Area
Latitude: 52° 13' 1.2" Longitude: -90° 49' 44.33"
UTM Zone: 15 Easting: 648311.116 Northing: 5787395.287 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53B02NW
Point Location Description: Precise
Location Method: Conversion from MDI
1962-65: Geophysical surveys and diamond drilling by Rio Tinto Canadian Exploration Limited. 1972: Geological and geophysical surveys and diamond drilling by Great Plains Development Company of Canada. 1996: Geological mapping and prospecting by Placer Dome Canada Limited.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 53B02NW-0012 | 53B02NW0006 | 53B02NW0006 |
| 53B08NE-0012 | 53B08NE9408 | 53B08NE9408 |
| 53B02NW-0017 | 53B01NW0003 | 53B01NW0003 |
| 2.16452 | 53B02NE0005 | 53B02NE0005 |
| 2.1006 | 53B02NW9432 | 53B02NW9432 |
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Belt: Horseshoe Lake
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Felsic Tuff | 1 | Lapilli Tuff | Adjacent |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Contains | ||
| Claystone | 3 | Near | ||
| Granitoid-Unsubdivided | 4 | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Chalcopyrite | Economic | Ore | ||||
| 10 | Magnetite | Economic | Ore | ||||
| 15 | Pyrite | Economic | Ore | ||||
| 20 | Pyrrhotite | Economic | Ore |
Mar 07, 2008 (Mark Puumala) - Sage and Breaks (1982) described the Sulphide Zone as a massive sulphide horizon up to 7.6 m thick that is hosted within schistose chloritic mafic metavolcanics with local intercalations of dacitic lapilli tuff. Talbot (1996a) also reported the nearby presence of well-laminated argillite containing up to 5% pyrite. The occurrence is also indicated by Talbot (1996) to be located immediately south of a tonalite intrusion that marks the northern boundary of the Horseshoe Lake greenstone belt. According to Sage and Breaks (1982), ground magnetic and electromagnetic surveys carried out over the area by Rio Tinto Canadian Exploration and Great Plains Development Company of Canada during the 1960s and 1970s respectively, identified a strong conductive horizon with an approximate strike length (east-striking) of 300 m that is interpreted to be associated with the Sulphide Zone. Talbot (1996a) noted that this horizon is located approximately along strike with the Rust Seep Zone, which is located approximately 1.5 km to the east. The most significant assays reported from this occurrence include 0.05 oz/ton Au over 0.94 m and 0.12% Cu over 0.3 m from a diamond drill hole advanced by Rio Tinto (Sage and Breaks 1982). No occurrence-grade assays were reported from seven diamond drill holes advanced in the area by Great Plains in 1972 (AFRI# 53B02NW0006).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Massive |
Book - AF SL 1972 53B02NW-0016
Publication Number: N/A Date: 1996
Author:
Publisher Name:
Location:
MonoMap - Geology of the Cat Lake-Pickle Lake area, districts of Kenora and Thunder Bay
Publication Number: R207 Date: 1982
Author: Sage R.P., Breaks F.W.
Publisher Name: Ontario Geological Survey
Location:
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