Ontario Geological Survey
Permanent Link to this Record:
MDI53B09NW00007
| Record Name(s) | OLP - Area No. 5 - 1985 |
|---|---|
| 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° 41' 37.22" Longitude: -90° 26' 27.26"
UTM Zone: 15 Easting: 672939.6 Northing: 5841267.7 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53B09NW
Point Location Description: Sample 23316 on map in Assessment report 53B09NW0004
Location Method: Data Compilation
1981-82: Geophysical, geological and geochemical surveys, trenching and prospecting by 493217 Ontario Ltd. 1985-88: Geological mapping, prospecting, trenching and diamond drilling by Van Horne Gold Explorations Inc., Oracle Resources Ltd. and Power Explorations Inc.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 16 | 53B09NW0007 | 53B09NW0007 |
| 2.11399 | 53B09NW0004 | 53B09NW0004 |
| 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 | Ironstone-unsubdivided | 1 | Contains |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Contains | ||
| Granitoid-Unsubdivided | 3 | Adjacent | ||
| Vein | 4 | Quartz | Host |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Arsenopyrite | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore | ||||
| 4 | Magnetite | Economic | Ore | ||||
| Limonite | Alteration | Hematization | 1 | Unknown | Disseminated |
Aug 28, 2019 (Mark Puumala) - The OLP Area No. 5 occurrence is hosted within the mafic metavolcanic rock-dominated South Rim unit of the McGruer assemblage (Thurston, Osmani and Stone 1991). Elliott and Corkery (1988) reported that gold mineralization in this area is associated with intercalated mafic metavolcanic flows and lean banded iron formations that are coincident with a strong VLF-EM conductor and magnetic anomaly. The main mineralized iron formation horizon is very limonitic with local concentration of up to 5% magnetite and trace arsenopyrite, pyrrhotite and pyrite (Elliott and Corkery 1988). The iron formation is also sheared and folded, with steep southwest-dipping axial planes and steep northwest-plunging hinges. The most significant assay that was reported from this zone by Elliott and Corkery (1988) was a grab sample of lean iron formation with trace pyrrhotite that contained 2063 ppb Au. A sample of quartz vein material that was collected approximately 30 m south-southwest of the main mineralized zone assayed 1835 ppb. This vein is located at a contact between mafic metavolcanics and an intermediate dike that is oriented 320/80 (Assessment report 53B09NW0004). A single diamond drill hole (OP-87-A-46) was advanced by Power Explorations to test this occurrence at depth, but no significant gold mineralization was intersected (Assessment report 53B09NW0007).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
| 3 | Stratabound |
| 2 | 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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