Ontario Geological Survey
Permanent Link to this Record:
MDI52L16NW00003
| Record Name(s) | 1968 ODM Sampling - 1968 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Discretionary Occurrence |
| Date Created | 1997-Jan-12 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Silver
Township or Area: Mulcahy
Latitude: 50° 59' 30.33" Longitude: -94° 13' 28.29"
UTM Zone: 15 Easting: 414061.76 Northing: 5649622 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 52L16NW
Point Location Description: Ag symbol on OGS map P0567
Location Method: Data Compilation
1961: Newconex Canadian Exploration carried out mapping, magnetometer, SP and EM surveys. 1968: OGS staff carried out mapping and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 63.1166 | 52K16NE8106 | 52K16NE8106 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Red Lake
Geological Age: Archean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Brecciated | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Flows, Flow Breccia | Adjacent | |
| Mudstone | 3 | Black Carbonaceous Sediments | Near | |
| Mudstone | 4 | Black Argillaceous Sediments | Near | |
| Ironstone-unsubdivided | 5 | Iron Formation | Oxide Facies | Near |
| Gabbro | 6 | Gabbro | Differentiated Sill | Intrudes |
Dec 07, 2005 (K R Kettles) - The stratigraphic succession in the vicinity of the prospect is comprised of mafic flows at the base, overlain by thin units of black carbonaceous sediments which are in turn overlain by argillaceous sedimentary rocks. The sedimentary rocks are overlain by a thin unit of mafic flow breccia and oxide facies iron formation. The uppermost unit is comprised of mafic flows. Rock units strike NW-SE and dip to the NE. Stratigraphic tops are to the NE. The volcanic and sedimentary rocks have been intruded by several differentiated gabbro sills. Metamorphic grade in the area has attained amphibolite facies. Mineralization is hosted in a sheared and altered ultramafic sill in iron formation. Anomalous silver values were located in a thin breccia zone in mafic metavolcanics.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Silver | Economic | Ore | ||||
| Quartz | Alteration | Silicification | 1 | Unknown | Disseminated | ||
| Carbonate | Alteration | Carbonatization | 2 | Unknown | Disseminated | ||
| Pyrite | Alteration | Sulphidation | 3 | Unknown | Disseminated |
Dec 07, 2005 (K R Kettles) - A grab sample from the breccia zone returned an assay of 0.15 oz/ton (5.143 g/tonne) Ag.
Dec 07, 2005 (K R Kettles) - In the vicinity of the prospect rocks have been carbonatized, silicified and contain abundant disseminated pyrite.
Map - Mulcahy Township, District of Kenora (Patricia Portion)
Publication Number: P0567 Scale: 1:9,600 Date: 1997
Author: Riley R.A.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Gold occurrences, prospects, and deposits of the Red Lake area, volumes 1 and 2
Publication Number: OFR5558 Scale: Date: 1987
Author: Durocher M.E., Burchell P.S., Andrews A.J.
Publisher Name: Ontario Geological Survey
Location:
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