Ontario Geological Survey
Permanent Link to this Record:
MDI42D15SE00022
| Record Name(s) | Alvey Occurrence - 1953, Wincore Exploration Ltd. - 1950, South McKellar - 1875, S Rosenblat Property - 1991, Canadian Nickel Company Ltd. - 1984, Gray and Alvey - 1991, Hibbert, Skalesky, Baarts - 1991 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Mar-29 |
| Date Last Modified | 2022-May-09 |
| Created By | |
| Revised By |
Primary Commodities: Zinc, Sulphur/Pyrite, Lead
Secondary Commodities: Silver, Copper
Township or Area: Walsh
Latitude: 48° 49' 41.78" Longitude: -86° 42' 42.43"
UTM Zone: 16 Easting: 521153 Northing: 5408405.99 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 42D15SE
Point Location Description: Pit
Location Method: Field Visit
Access Description: The Alvey occurrence is located approximately 1.2 km north of Highway 17, north of the town of Ripple in Walsh Township (formerly Township 80), just west of a small lake (claim map G-636). Two separate occurrences are suggested; an iron formation with abundant pyrite and a carbonate vein with sphalerite and galena. The showing area is accessed via a overgrown logging road, departing from Highway 17 just northeast of Ripple. Helicopters can land on the small lake just east of the showing.
1875: Unspecified silver exploration; P. McKellar 1950: Diamond drilling (3 holes totalling 83 m); Wincore Exploration Ltd. 1981: Geological survey including lithogeochemical sampling; Canadian Nickel Company Limited. 1983: Property examination and lithogeochemical sampling; OGS Resident Geologist staff. 1984: Geophysical survey (EM), geological mapping and diamond drilling; Canadian Nickel Company Limited.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 11 | 42D15NE0070 | 42D15NE0070 |
| 2.6931 | 42D15NE0032 | 42D15NE0032 |
Province: Superior
Subprovince: Wawa
Terrane: Wawa-Abitibi
Belt: Schreiber-Hemlo
Geological Age: Archean
Dec 07, 2005 (D McKay) - The general geology consists of metasedimentary rocks, predominately turbidites which display isoclinal folding and fracturing. The area is in close proximity to a contact with metavolcanic rocks and iron formation. Walker (1967, p.36) described the Alvey occurrence: About 1 miles north of Ripple, a zone of sheared greywacke and iron formation contains about 30 percent massive and disseminated pyrite. The massive pyrite is found in lenticular nodules up to several feet thick. The zone is up to 40 feet wide, dips steeply, and strikes N65 degrees E. Page (1953, assessment files) also described local geology: Locally, rhyolitic types predominate in the northern portion of the claim group while agglomerate and andesite are prevalent in the southern portion. Some sedimentary member are evident in the form of schistose slates on claim TB 40861 while an extensive body of quartzite lies along the southern boundary of claim TB 44848. Fracturing and faulting in east-west and north-south directions are common, the former predominating and apparently being the guiding influence in localizing mineral deposition.
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | If | Host |
|---|---|---|---|---|
| Sandstone | 2 | Greywacke | Host | |
| Mafic lava flow-unsubdivided | 3 | Near | ||
| Felsic lava flow-unsubdivided | 4 | Fractured | Host | |
| Vein | 5 | Host |
| 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 | Galena | Economic | Ore | ||||
| 1 | Carbonate | Economic | Gangue | ||||
| Carbonate | Alteration | Hydrothermal | 1 | Unknown | Veins |
Jul 23, 2018 (D McKay) - Page (1953, assessment files) described the mineral deposits on the Wincore claim group: On claim TB 40868 a persistent fracture zone striking N20 degrees W enters the group from the east. This zone, which is developed is brittle rhyolites, is exposed in an old pit 75 feet inside the claim boundary. A central stringer of carbonatized vein matter carried section up to four inches in width of massive, brown sphalerite. A grab sample of the high grade material is reported to have returned 0.48 oz. silver and 28% zinc. A further 12 inches of altered, brecciated rhyolite contains sparse sphalerite mineralization. Immediate continuity to the west cannot be traced because of low, swampy ground. It is probable that the vein continues to the west in similar character. A large pyrite zone occurs on claims TB 40861 and TB 40865. It is first exposed approximately 100 feet west of the shore of a small lake where old trench and strippings expose a rusty schistose some fifty feet wide. This zone carries narrow bands and stringers of massive pyrite. 350 feet along the strike (S50 degrees W) a small creek crosses the sulfide-bearing material across 140 feet. Three x-ray diamond drill holes were put down into the zone at this point. Some twenty feet of core near the north contact is reported to have shown a good grade of pyrite. Grab samples collected from the occurrence in 1981 by Canadian Nickel Company Ltd. returned assay results which varied up to 300 ppm Cu, 755 ppm Zn and 25 ppb Au (SH Resident Geologist Mineral Deposit Files). Grab samples collected in 1983 by Resident Geologist staff returned assay results which varied up to <0.01 ounce per ton Au, 1.34 ounce per ton Ag, 146 ppm Cu and 1.55% Pb.
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Map - Jackfish-Middleton area, Thunder Bay District
Publication Number: M2107 Date: 1967
Author: Walker J.W.R.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Page: 594-598 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
Map - Nipigon-Schreiber, geological compilation series, Thunder Bay District
Publication Number: M2232 Scale: 1:253,440 Date: 1973
Author: Carter M.W., McIlwaine W.H., Wisbey P.A.
Publisher Name: Ontario Division of Mines
Location:
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 346 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
MonoMap - Geology of the Jackfish-Middleton area, District of Thunder Bay
Publication Number: R050 Date: 1997
Author: Walker J.W.R.
Publisher Name: Ontario Dept. of Mines
Location:
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