Ontario Geological Survey
Permanent Link to this Record:
MDI53B02NW00005
| Record Name(s) | Horseshoe Lake-Rust Seep - 1985 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1985-Jul-29 |
| Date Last Modified | 2022-Jun-07 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Kecheokagan Lake Area
Latitude: 52° 13' 5.2" Longitude: -90° 48' 11.33"
UTM Zone: 15 Easting: 650071.991 Northing: 5787571.945 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53B02NW
Point Location Description: Precise
Location Method: Conversion from MDI
1962-65: Geological and geophysical surveys by Rio Tinto Canadian Exploration. 1981: Geological, geochemical and geophysical surveys by Norcen Energy Resources Limited. 1991: Prospecting and assaying by Jean Dignard. 1996: Geological mapping and prospecting by Placer Dome Canada.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.16452 | 53B02NE0005 | 53B02NE0005 |
| 63.6235 | 53B02NW9431 | 53B02NW9431 |
| 53B02NW0017 | 53B01NW0003 | 53B01NW0003 |
| 53B08NE0012 | 53B08NE9408 | 53B08NE9408 |
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Belt: Horseshoe Lake
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Sulphide Ironstone | 1 | Sulphidized Oxide-Facies | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Adjacent | ||
| Porphyry-unsubdivided | 3 |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore |
Mar 07, 2008 (Mark Puumala) - Talbot (1996a) describes the Rust Seep Zone as a localized concentration of pyrite, pyrrhotite and arsenopyrite within sulphidized oxide-facies iron formation that is exposed in a series of outcrops and pits on the shore of Horseshoe Lake. The mineralized zone is reported to be a narrow sulphide-rich, cherty unit containing up to 25% densely-disseminated sulphides that form gossans. The sulphides display stringer and replacement textures. The sulphidized iron formation is reported by Talbot (1996) to be hosted in east-striking, sheared, chloritic and strongly carbonatized mafic flows that have been intruded by feldspar porphyry dikes. Talbot (1996) also reports greater than 1% stringer pyrite + pyrrhotite in the sheared mafic metavolcanics, and the common occurrence of pyrite along the porphyry-iron formation contact. Sage and Breaks reported a grab sample assay of 0.02 oz/ton Au from this occurrence, while Talbot (1996a) reports that Norcen Energy Resources obtained a grab sample assay of 700 ppb in 1981, and that prospector Jean Dignard obtained a grab sample assay result of 740 ppb Au from a sample collected from this showing in 1991.
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Stratabound |
Map - North Caribou Lake, Ontario; Geological Survey of Canada, Preliminary Map 18-1961
Publication Number: GSC Map 18-1961 Scale: 1:253,440 Date: 1961
Author: Carruthers, C A
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/108764
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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