Ontario Geological Survey
Permanent Link to this Record:
MDI52A10SW00033
| Record Name(s) | Blende Lake - 1867 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-22 |
| Date Last Modified | 2022-Mar-04 |
| Created By | |
| Revised By |
Primary Commodities: Silver
Secondary Commodities: Zinc, Barite, Lead, Copper, Amethyst
Township or Area: McTavish, Macgregor
Latitude: 48° 35' 44.29" Longitude: -88° 46' 45.9"
UTM Zone: 16 Easting: 368801.35 Northing: 5384034.54 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A10SW
Point Location Description: Transfer
Location Method: Conversion from MDI
1867: discovered by P. McKellar, who sunk two test pits. No assessment reports were found on file.
Province: Southern
Formation Group: Animikie Group
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Breccia-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Vein | 2 | Host | ||
| Terrigenous-Clastic-Unsubdivided | 3 |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Galena | Economic | Ore | ||||
| 2 | Sphalerite | Economic | Ore | ||||
| 3 | Silver | Economic | Ore | ||||
| 4 | Argentite | Economic | Ore | ||||
| 5 | Chalcopyrite | Economic | Ore | ||||
| 6 | Fluorite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Amethyst | Economic | Gangue | ||||
| 3 | Calcite | Economic | Gangue | ||||
| 4 | Barite | Economic | Gangue |
Mar 10, 2020 (Therese Pettigrew) - A mineralized vein occurs on lot 1Z, McTavish township. It is exposed on the west side of Pass Lake Road, 3,700 feet southeast of the Nipigon highway. This vein was discovered in 1867 by Peter McKellar and was explored on both sides of Blende Lake through a distance of 1 mile in mining location Z1 and Z4. Two test pits were sunk on the vein within one-quarter mile east of BIende Lake. A further examination of the surface resulted in the discovery of other veins. Three of these lie in the immediate vicinity of the bridge over Blende River on the Pass Lake road. The largest of these is exposed 125 feet southwesterly from the bridge. It is in a faulted zone in Animikie greywacke and an overlying sill of diabase. The faulted zone is 70 feet wide, strikes north 20 degrees east, and is cemented with finely crystalline, white quartz. About 60 feet east of the bridge a 6-inch calcite vein in Animikie iron formation strikes north. About 125 feet southeast of the bridge a vein of white quartz and calcite, at least 10 feet wide, is partly exposed striking northeasterly through Animikie iron formation. The veins are exposed for lengths of only a few feet and where visible are devoid of metallic minerals. The vein discovered in 1867, the Blende Lake vein, cements a fault shatter zone some 20 feet wide striking north 75 degrees east. The rocks on the south of the vein are stratigraphically lower than those on the north, though Iocally standing at a higher elevation. The greater part of the composite vein is a network of veinlets and veins less than 1 inch in width and composed of fine-grained white quartz. Larger veins up to 2 feet in width trend in an irregular manner through the network and consist of white and amethystine quartz, white calcite, and transparent brown and milky white barite. GaIena and sphalerite are locally abundant, but the greater part of the vein as exposed is lacking in metallic minerals. In 1877, Mr. Ingall reported that assays from the Blende Lake vein were said to have yielded $14 to the ton in silver (11.6 oz/t Ag based on a silver price of $1.21/oz) (Tanton, 1931). Sphalerite in large crystals occurs in a vein of coarse calcite about 8 feet wide at Blende Lake (NSP011).
Part - Gunflint iron range in the vicinity of Port Arthur
Publication Number: ARV69-07.001 Scale: Date: 1998
Author: Moorhouse W.W.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - Fort William and Port Arthur, and Thunder Cape Map-area, Thunder Bay District, Ontario; Geological Survey of Canada, Memoir 167
Publication Number: GSC Memoir 167 Scale: Date: 1931
Author: Tanton, T.L.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100799
Mono - Report Of The Royal Commission On The Mineral Resources Of Ontario And Measures For Their Development
Publication Number: NSP011 Scale: Date: 1998
Author:
Publisher Name:
Location:
Part - Lead and zinc deposits in Ontario and in eastern Canada
Publication Number: ARV25-02 Scale: Date: 1998
Author: Uglow W.L.
Publisher Name: Ontario Bureau of Mines
Location:
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