Ontario Geological Survey
Permanent Link to this Record:
MDI53A05NW00005
| Record Name(s) | Sage Lake - West - 1961 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1995-May-24 |
| Date Last Modified | 2022-Jul-06 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Neawagank Lake Area
Latitude: 52° 27' 48.21" Longitude: -89° 58' 47.19"
UTM Zone: 16 Easting: 297579.131 Northing: 5816755.529 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53A05NW
Point Location Description: Precise
Location Method: Conversion from MDI
1961-65: Geological and geophysical surveys and diamond drilling by Rio Tinto Canada Exploration Ltd. 1981-82: Geological and geophysical surveys and diamond drilling by Canadian Nickel Company Ltd.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 53A05NW-0019 | 53A05NW0017 | 53A05NW0017 |
| 53A05NW0017A1 | 53A05NW0041 | 53A05NW0041 |
| 53A05NW0044 | 20000004873 | 20000004873 |
Province: Superior
Subprovince: Berens River
Terrane: North Caribou
Domain: North Caribou Core
Belt: North Caribou
Geological Age: Mesoarchean
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Contains |
|---|---|---|---|---|
| Ironstone-unsubdivided | 2 | Near |
| 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 | Pyrrhotite | Economic | Ore | ||||
| 4 | Arsenopyrite | Economic | Ore | ||||
| Chlorite | Alteration | Chloritic | 1 | ||||
| Graphite | Alteration | Graphitic | 2 |
Mar 13, 2008 (Mark Puumala) - The first evidence of potential economic mineralization at the west end of Sage Lake was found in 1961 with the discovery of gold mineralized float by Rio Tinto Canadian Exploration in 1961 (Boleantu 1961). This mineralized float was described as gossanized chloritic schist mineralized with pyrite, massive to crystalline arsenopyrite and quartz veins. Boleantu (1961) reported gold assays of 0.06 and 0.14 oz/ton. Subsequent diamond drilling carried out in the area by Rio Tinto in 1963 (drill hole SL-6 - AF TB 53A/05NW-0015-C1) intersected 0.18 m of black-green schist that assayed 0.02 oz/ton Au. This horizon was immediately below a 1 m wide horizon of oxide-facies iron formation that was reported to be cross-cut by quartz veinlets and mineralized with pyrrhotite and chalcopyrite. Perry (1982) reported that a Canadian Nickel Company diamond drill hole (57741) targeting a geophysically-inferred fold in iron formation a the west end of Sage Lake (with a probable east-striking axis as shown on Canadian Nickel assessment file map E-5) encountered a quartz vein that assayed 16.2 g/t Au over 0.5 m. This vein was hosted in mafic metavolcanics approximately 47 m above the iron formation.
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
File - Resident Geologist files AF SL 1941 53A05NW-0014
Publication Number: Date: 1996
Author:
Publisher Name:
Location: Thunder Bay RGP
File - Geological and diamond drilling report, area of Neawagank Lake
Publication Number: AFTB53A05NW0013 Date: 1982
Author: Perry, J.
Publisher Name:
Location: Thunder Bay RGP
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