Ontario Geological Survey
Permanent Link to this Record:
MDI53B09NW00011
| Record Name(s) | ALSP South Central Quartz Vein - 1987, Alsp - L140s - 1995, OLP Area 7 (L44N) - 1988 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1995-May-23 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Skinner Lake Area
Latitude: 52° 42' 34.29" Longitude: -90° 26' 37.28"
UTM Zone: 15 Easting: 672688.98 Northing: 5843024.02 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53B09NW
Point Location Description: Transfer
Location Method: Conversion from MDI
1963: Inco drilled 1 DDH totalling 23.5 m. 1981-82: Canadian Nickel Company Ltd. carried out geophysical, geological and geochemical surveys, trenching and prospecting. 1985-88: Geological mapping, prospecting, trenching and diamond drilling by Van Horne Gold Explorations Inc., Oracle Resources Ltd. and Power Explorations Inc. 2007: Goldcorp conducted prospecting and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.10760 | 53B09NW0001 | 53B09NW0001 |
| 16 | 53B09NW0007 | 53B09NW0007 |
| 2.11399 | 53B09NW0004 | 53B09NW0004 |
| 53B09NW0012B1 | 53B09NW9440 | 53B09NW9440 |
| 2.42018 | 20000004298 | 20000004298 |
| 2.5613 | 53B09NW9423 | 53B09NW9423 |
| 53B09NW0014 | 53B09NW0017 | 53B09NW0017 |
| 53B09NW0027 | 53B09NW0008 | 53B09NW0008 |
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 |
|---|---|---|---|---|
| Terrigenous-Clastic-Unsubdivided | 2 | Near | ||
| Ironstone-unsubdivided | 3 |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Magnetite | Economic | Ore | ||||
| Limonite | Alteration | Hematization | 1 | Strong | Disseminated | ||
| Chlorite | Alteration | Chloritic | 2 | Unknown | Disseminated |
Aug 28, 2019 (Mark Puumala) - Newman and Burk (1987) reported a grab sample assay of 1800 ppb Au at this location from a 60 cm wide concordant quartz vein (foliation in the area generally strikes 335 with near-vertical dip) hosted in mafic metavolcanics. The vein was reported to have been mineralized with approximately 1% sulphides. The host mafic metavolcanic rocks are part of the South Rim unit of the McGruer assemblage (Thurston, Osmani and Stone 1991). The occurrence is located approximately 400 m west of the contact with the Eyapamikama metasedimentary rock assemblage of Thurston, Osmani and Stone (1991). The mineralized chemical metasedimentary rocks are described as being limonitic and locally containing 5 to 10% magnetite, rare carbonate and trace pyrite and pyrrhotite. A 0.45 m wide band of limonitic chert with trace pyrite and pyrrhotite that is variable exposed over a strike-length of 60 m was reported by Elliott and Corkery (1988) to have contained anomalous gold values in several grab samples, with the most notable assay being 760 ppb. This mineralized horizon is oriented 148/75. The most significant gold mineralization from this occurrence (2192 ppb Au) was reported by Elliott and Corkery to occur in a 0.2 m wide, 143-striking limonitic shear zone with minor carbonate (Assessment report 53B09NW0004). This mineralized zone was subsequently tested at depth by Power Explorations diamond drill hole number OP-87-A-43 (Corkery and Elliott 1988). This drill hole intersected several zones of mineralization similar to that observed on surface. However, no significant assays were obtained from these horizons. Nevertheless, an anomalous gold assay value of 0.024 oz/ton Au was reported over 1.0 m from a band of wacke containing numerous quartz-tourmaline-pyrite veinlets (Assessment report 53B09NW0007).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Article - Northwestern Superior province: review and terrane analysis
Publication Number: SV04-01.005 Scale: Date: 1997
Author: Thurston P.C., Osmani I.A., Stone D.
Publisher Name: Ontario Geological Survey
Location:
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