Ontario Geological Survey
Permanent Link to this Record:
MDI53B09SW00009
| Record Name(s) | Libert Lake L-4 - 1982, Lake Prospect - 1982 |
|---|---|
| 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: Zeemel Lake Area
Latitude: 52° 31' 31.21" Longitude: -90° 26' 25.26"
UTM Zone: 15 Easting: 673642 Northing: 5822549.14 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53B09SW
Point Location Description: Precise
Location Method: Conversion from MDI
1981-84: Opex Resources Inc. carried out geological mapping, trenching, magnetic and VLF-EM surveys, and soil geochemical sampling. 1987: Power Explorations Inc. and Van Horne Gold Exploration Inc. carried out prospecting, trenching, and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.11220 | 53B09SW0004 | 53B09SW0004 |
| 53B09SW0034 | 53B09SW9416 | 53B09SW9416 |
| 53B09SW0041 | 53B09SW9425 | 53B09SW9425 |
| 53B09SW0024 | 53B09SW0024 | 53B09SW0024 |
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Geological Age: Mesoarchean
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 | Contains |
|---|---|---|---|---|
| Ironstone-unsubdivided | 1 | 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 | Chalcopyrite | Economic | Ore | ||||
| 3 | Magnetite | Economic | Ore | ||||
| Silica | Alteration | Silicification | 1 | Unknown | Disseminated |
Mar 14, 2008 (Mark Puumala) - The L-4 showing is described by Timoshenko (1988) as a highly sheared, silicified and weakly mineralized zone hosted in a band of oxide facies iron formation and mafic metavolcanics. This approximately north-northeast-striking zone is located along strike with the L-1 showing (MDI53B09SW00010), which is located approximately 1100 m to the north-northeast. Mapping by Hodge (1982) indicates that this occurrence is located adjacent to the contact between the host mafic metavolcanic rock-dominated sequence and a large felsic intrusion that occurs to the west. The mafic metavolcanic unit appears to form a thin (<200m) north-northeast-striking wedge that is also bounded to the east by felsic intrusive rocks. Hodge (1982) described the mineralization at the L-4 showing as consisting of 10% pyrite and trace chalcopyrite. A 1.83 m chip sample taken across this zone was reported by Hodge (1982) to have assayed 0.05 oz/ton Au. Timoshenko (1988) reported grab sample assays of 0.086 oz/ton Au from a sample of quartz vein material collected from the sheared, silicified mafic metavolcanics, and 0.093 oz/ton Au from a sample collected at the sheared contact between the mafic metavolcanics and granite.
Sep 11, 2019 (Therese Pettigrew) - Samples collected in 1987 returned values of 2.955 g/t Au from a quartz vein in mafic metavolcanics and 3.188 g/t Au from a talc-chlorite-amphibolite schist at a sheared contact between mafic metavolcanics and granites (Assessment report 53B09SW0004).
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Sheared |
Mono - The geology of gold prospects in the North Caribou Lake greenstone belt, District of Kenora, northwestern Ontario
Publication Number: OFR5698 Scale: Date: 1989
Author: Piroshco D.W., Breaks F.W., Osmani I.A.
Publisher Name: Ontario Geological Survey
Location:
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