Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52N04SW00026

Record: MDI52N04SW00026

General

Mineral Record Identification
Record Name(s)	East Bay - West - 1983, KRL-1516 and 1517 - 1927
Related Record Type	Simple
Related Record(s)
Record Status	Discretionary Occurrence
Date Created	1983-Sep-14
Date Last Modified	2022-Nov-15
Created By
Revised By

Commodities

Primary Commodities: Zinc

Secondary Commodities: Cobalt

Location

Township or Area: Dome

Latitude: 51° 5' 53.3" Longitude: -93° 46' 53.38"

UTM Zone: 15 Easting: 445279 Northing: 5661028.99 UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52N04SW

Point Location Description: DDH in NW corner Claim KRL1517 map 2074

Location Method: Data Compilation

Exploration History

1920s: stripping and trenching. 1944-46: 3 DDHs under zone, no base metal or gold assays reported.

Assessment Work on File

Assessment Work on File
Office File Number	Online Assessment File Identifier	Online Assessment File Directory
63.4065	52N04NW0025	52N04NW0025
2.24128	52N04NW2010	52N04NW2010
26	52N04SW0094	52N04SW0094
63.3372	52N04SE0010	52N04SE0010
63.3387	52N04SE0009	52N04SE0009

Geology

Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Red Lake

Geological Age: Archean

Lithology

Lithology Data
Rock Type	Rank	Composition
Mafic massive flow	1
Mafic pillowed flow	2
Vein	3	quartz carbonate

Mineralization

Mineralization and Alteration
Rank	Mineral Name	Class	Economic Mineral Type
1	Pyrite	Economic	Ore
2	Sphalerite	Economic	Ore
3	Arsenopyrite	Economic	Ore
4	Erythrite	Economic	Ore
1	Quartz	Economic	Gangue
2	Calcite	Economic	Gangue

Mineralization Comments

Nov 13, 2014 (A Wilson) - 3 drill holes completed under the surface zone, no base metal or gold values reported.

Aug 28, 2017 (Therese Pettigrew) - Historic claims KRL 1516 and 1517 lie between East Bay and the main body of Red Lake. In the northwest corner of No. 1517 and the northeast corner of No. 1516, a bluff of rock slopes down to swampy ground to the north and west and continues southward as a soil-covered ridge. The main ridge is in part massive greenstone, in part pillow lavas. The two types are interbedded and strike N70 E. At the foot of the bluff, a band of soft schistose talc rock has been exposed by trenching for a width of 10 feet. South of the talc rock, the greenstone shows some fracturing. Where an open cut has been made in the rock on claim No. 1517, there are a great many tiny irregular cracks, which are filled with calcite; cutting across these are larger veins, some of which reach a width of half an inch. The latter consist of calcite along the edges and quartz in the centre. Pyrite occurs chiefly in the quartz vein filling or along the margins between the quartz and calcite. Sphalerite of a deep-purplish colour is found scattered through the fracture zone but is seldom in great amount, a lens two feet in length with a maximum width of two inches being the largest solid mass seen in place at the time the workings were visited. An interesting feature of the mineralization is the presence on some of the fracture planes of a thin coating of cobalt bloom, perhaps derived from a small quantity of cobalt in the pyrite. In an open cut on No. 1516, 200 feet west of the working on No. 1517, the greenstone shows a series of roughly parallel larger fractures with tiny parallel transverse fractures connecting the large ones, so that the whole rock is a network of veinlets. The vein filling is calcite. A few quartz veins, with maximum widths of one inch, cut irregularly through the whole. Metallic minerals are very sparingly present in this part. The fracture zone is roughly parallel to the banding of the rocks and occurs in a massive greyish-green rock, which is somewhat crystalline. It is probably of slightly different composition from the other bands of greenstone and perhaps somewhat more brittle, so that it has retained fractures (Bruce and Hawley, 1927).

Mineral Record Details

Classification
Rank	Classification
1	Vein