Ontario Geological Survey
Permanent Link to this Record:
MDI52H01SE00007
| Record Name(s) | Kama Bay Occurrence - 9999, Kama Bay - 1991 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1991-Apr-01 |
| Date Last Modified | 2023-Aug-15 |
| Created By | |
| Revised By |
Primary Commodities: Copper, Zinc, Lead
Secondary Commodities: Barite
Township or Area: Patience
Latitude: 49° 0' 3.41" Longitude: -88° 3' 45.31"
UTM Zone: 16 Easting: 422281.927 Northing: 5428104.925 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52H01SE
Point Location Description: Pits, trenches.
Location Method: Conversion from MDI
Access Description: The occurrence is located on the west side of Kama Bay about 2 km south-southeast of Ozone Siding in Patience Township (formerly Township 91) (claim map G-142). Access is by foot from Ozone Siding on the CPR or from Nipigon by boat to Kama Bay in Lake Superior.
1925: J. Lawrence and J.P Mignault sank a test pit 2.4 m deep and dug two trenches on the vein approximately 45 m from the lakeshore. 1927: The property was restaked by G. Harris as TB4588. 1990: The occurrence was staked and trenched by J. and M. Dampier.
Province: Superior
Geological Age: Archean
Dec 07, 2005 (B Nelson) - According to Hawley (1929), on the west shore of Kama Bay a brecciated zone occurs in massive reddish sandstone, striking east. The main mineralization is in a band 1.8 m wide, which is penetrated by numerous stringers of quartz and barite carrying galena. These are under water. A few chains inland an old pit was sunk in brecciated grey to red sandstone cemented with vein quartz and barite, with local segregations of galena and sphalerite. No true vein could be seen as the pit is largely filled in and drift covers the zone along its strike. Tanton (1931) writes of 'a fracture zone about 30 m wide...naturally exposed along the shore, trending 3 degrees north of west and dipping 70 to 80 degrees south. The fracture zone is in arenaceous tuff. The rock immediately to the south of the shatter zone on the lake shore is a conglomerate consisting of granite boulders up to 50 cm in diameter lying in a tuffaceous matrix. The vein system is a network of quartz and barite veinlets in a cemented brecciated zone having a width of about 3 m.' Schnieders (1996) writes that the vein system is locally hosted by granitic augen gneiss, foliated at 63 degrees. However, the unconformity surface between the Archean, granitic basement and the overlying Proterozoic sedimentary rocks lies very near to the present erosional surface near the lake level.
| Rock Type | Rank | Composition | Texture | Relationship | Sandstone | 1 | Massive, Brecciated Zone | Host |
|---|---|---|---|---|
| Vein | 2 | Quartz And Barite | Host | |
| Conglomerate | 3 | Near | ||
| Granite | 4 | Augen Gneiss | Host |
Dec 07, 2005 (B Nelson) - The host rock is a fine-grained, silicified, olive green to brick red siltstone of the Sibley Group (Fire Hill member?). The host rock contains minor carbonate, is fairly massive but becomes closely jointed near the veins. The conglomerate described by Tanton (1931) is a basal breccia consisting of altered, Archean granite boulders in a maroon to red regolith approximately 20 cm thick. Dark green reduction haloes have developed around some of the boulders. Small variably oriented quartz veins crosscut these lakeshore exposures.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Barite | Economic | Ore | ||||
| 2 | Galena | Economic | Ore | ||||
| 3 | Sphalerite | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Ore | ||||
| 5 | Pyrite | Economic | Ore | ||||
| 1 | Quartz | Economic | Gangue | ||||
| 2 | Calcite | Economic | Gangue | ||||
| 3 | Barite | Economic | Gangue | ||||
| Quartz | Alteration | Hydrothermal | 1 | Unknown | Disseminated | ||
| Barite | Alteration | Hydrothermal | 2 | Unknown | Disseminated | ||
| Calcite | Alteration | Hydrothermal | 3 | Unknown | Disseminated |
Dec 07, 2005 (B Nelson) - The vein material is predominantly white crystalline quartz; other gangue minerals are amethyst, white calcite, and rose colored barite. Metallic minerals, cheifly of galena and zinc blende (sphalerite), are present to the extent of 3% of the volume. Chalcopyrite and pyrite also occur. Grab samples of vein material collected in 1990 returned values ranging from 0.017 to 0.583% Cu, 0.008 to 7.48% Zn, and 0.013 to 21.360% Pb. All 5 samples returned nil Ag values; 2 samples returned trace Au, and 1 returned 0.002 oz/ton Au.
Date: Feb 27, 1997
Geologist: B Nelson
Notes: Resident Geologist personnel visited the occurrence September 20, 1990.
File - Resident Geologist Mineral Deposit Files
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
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:
Map - Red Rock-Pine Portage sheet, District of Thunder Bay, geological compilation series
Publication Number: P0357 Scale: 1:126,720 Date: 1997
Author: Pye E.G.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Mineral Occurrences in the Nipigon-Marathon Area, Volumes 1 and 2.
Publication Number: OFR5951 Page: Vol. 2, p.904 Date: 1996
Author: Schnieders B.R., Smyk M.C., Speed A.A., McKay D.B.
Publisher Name: Ontario Geological Survey
Location:
File - Schreiber-Hemlo Resident Geologist Mineral Deposit Files, Thunder Bay office
Publication Number: Min Dep Date:
Author:
Publisher Name:
Location: Thunder Bay RGP
Book - 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 Date: 1931
Author: Tanton, T.L.
Publisher Name: Geological Survey of Canada
Location: https://doi.org/10.4095/100799
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