Ontario Geological Survey
Permanent Link to this Record:
MDI52A10NE00025
| Record Name(s) | Caribou - 1863, O. Paju - 1929 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1979-Dec-13 |
| Date Last Modified | 2022-Mar-04 |
| Created By | |
| Revised By |
Primary Commodities: Lead, Zinc
Secondary Commodities: Silver
Township or Area: McTavish
Latitude: 48° 41' 52.96" Longitude: -88° 33' 48.69"
UTM Zone: 16 Easting: 384952 Northing: 5395069.01 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52A10NE
Point Location Description: Shaft on OGS map P0721
Location Method: Data Compilation
1863: galena-bearing veins were discovered. 1981: G.J. Maxwell staked the property. 1982: Noranda Exploration optioned the property. 1983: Noranda carried out linecutting, mapping, and sampling.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.5900 | 52A10NE0026 | 52A10NE0026 |
Province: Southern
Subprovince: Nipigon Basin
Formation Group: Sibley Group
Geological Age: Mesoproterozoic
| Rock Type | Rank | Composition | Texture | Relationship | Diabase | 1 | Diabase |
|---|---|---|---|---|
| Sandstone | 2 | |||
| Vein | 3 | Host |
Feb 25, 2020 (Therese Pettigrew) - Kustra (1969) visited the site and described the showing: “The vein is located approximately 500 feet south of an adit and trends N80E and dips 70S. The vein varies in width from 10 inches to over 3 feet and can be traced for a strike length of at least 250 feet. It is localized along the contact between red argillite of the Sibley Group and red, massive granite of Archean age. A narrow diabase dike, apparently pre-mineralization in age, occupies part of the contact zone.”
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Sphalerite | Economic | Ore | ||||
| 3 | Amethyst | Economic | Ore | ||||
| 4 | Galena | Economic | Ore | ||||
| 1 | Calcite | Economic | Gangue | ||||
| 2 | Barite | Economic | Gangue |
Feb 25, 2020 (Therese Pettigrew) - The vein occurs at the contact of a dike of diabase and flat-lying Nipigon (dolomitic) sediments which rest upon granite. The diabase dike strikes E. 15 S. and cuts both granite and sediments. It ranges from 12 to 15 feet in width and can be traced across two outcrops with an intervening quarter-mile of swamp. The dike is vertical and apparently occupies a fault fissure. The vein is small and irregular in size. It contains sphalerite, galena, traces of chalcopyrite and pyrite in a quartz-calcite-barite gangue. In places the ore occurs in a breccia cemented with quartz and calcite; elsewhere it is distributed in fine stringers in the adjoining country rocks. In a recently worked pit two small lenses of almost pure galena, 1 foot in width, were observed. The galena carries no silver. Huge vugs, 3 feet in length, were found in the vein material at the diabase contact (Hawley, 1930). Kustra (1969) reported “At the western end of the vein, a 10 inch gangue-filled fracture is exposed. The vein here is bounded on its north side by granite and by diabase on its south side. Siltstone outcrops within 10 feet of the vein. Mineralization consists of galena, making up 10 percent of the vein material, and minor amounts of sphalerite and pyrite. A sample of mineralized vein, chipped across a width of 10 inches returned 0.42 oz/t Ag, 19.0% Pb and 0.90% Zn. Approximately 150 feet east along the vein, a trench exposes several narrow veins confined to a width of 4 feet. The veins occupy narrow fractures in diabase that is bounded on its north and south sides by granite. Mineralization consists of galena occurring as massive streaks, up to 1 inch wide, and as disseminated crystals. A composite sample of mineralized vein material taken across a width of 3 feet returned 0.23 oz/t Ag and 30.9% lead.” Sample 19831 collected in 1983 by Noranda returned 14000 ppm Pb, 250 ppm Zn, and 1.7 ppm Ag. Sample 19832 returned 2700 ppm Pb, 53 ppm Zn, and 1.4 ppm Ag (Assessment report 52A10NE0026).
Article - Thunder Bay District
Publication Number: MP033.003 Scale: Date: 1997
Author: Kustra C.R.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Lead and zinc deposits, Dorion and McTavish townships, Thunder Bay District
Publication Number: ARV38-06.002 Scale: Date: 1998
Author: Hawley J.E.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Scale: Date: 1969
Author: Shklanka R.
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
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