Ontario Geological Survey
Permanent Link to this Record:
MDI41P07NW00006
| Record Name(s) | Mcara Lake Prospect - 1997, McAra Cobalt Property - 2005 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Prospect |
| Date Created | 2002-May-28 |
| Date Last Modified | 2023-Mar-27 |
| Created By | |
| Revised By |
Primary Commodities: Nickel, Copper, Cobalt, Silver
Secondary Commodities: Zinc, Lead, Gold
Township or Area: Dufferin
Latitude: 47° 23' 49.64" Longitude: -80° 57' 57.01"
UTM Zone: 17 Easting: 502578 Northing: 5249296.996 UTM Datum: NAD83
Resident Geologist District: Kirkland Lake
NTS Grid: 41P07NW
Point Location Description: Trench location
Location Method: Field Visit with GPS
1998: Minescape Exploration Inc. - airborne geophysics, ground geophysics 1998: Wallbridge Mining Company Limited completed eleven diamond drill holes in the immediate vicinity of the McAra showing (Hunter 1998). The Wallbridge drilling intersected a high-grade cobalt-arsenic rich polymetallic vein system crosscutting stratigraphy and striking to the northeast towards the McAra base metal showing. Three diamond drill holes intersected the vein system. Diamond drill hole WM-02 intersected 2.4% Co over 3.9 m, including 10.03% Co over 0.46 m and 9.44% Co over 0.46 m, diamond drill hole WM-03 intersected 13.36% Co over 0.57 m and diamond drill hole WM-10 intersected 5.89 % Co, 6% Pb and 10.34% Zn over 0.31 m. Mustang Minerals Corp. completed 11 holes totalling 1335 m . Each of the first three drill holes intersected polymetallic mineralization consisting of zinc, copper, lead, cobalt, silver and gold. Assay values returned anomalous values ranging up to 0.77% Zn, 0.11% Cu, 0.21% Pb, 18 g/t Ag and 0.27g/t Au over widths of up to 1.0 m. Hole YMU-6, averaged 1.43 g/t Au over a core length of 11m including 3.07 g/t Au over a core length of 4 m. (Mustang Minerals Corp.Press Release January 29, February 14 and 24, March 7 and 18, April 8, and June 26, 2003, http://www.mustangminerals.com/). 2005-09: Liberty Mines Ltd. - diamond drilling
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| CO-2894 | 41P07NW2011 | 41P07NW2011 |
| CO-2804 | 41P07NW2008 | 41P07NW2008 |
| CO-2895 | 41P07NW2010 | 41P07NW2010 |
| CO-2896 | 41P07NW2009 | 41P07NW2009 |
Dec 07, 2005 (G Meyer) - The sedimentary/volcanogenic suites of rocks hosting the mineralization occur over an area measuring approximately 8 km from south to north and reach a maximum width of 3 km. To the south and west, the suite of rocks is intruded by granitic rocks and is covered by Huronian rocks to the north and east. Nipissing diabase is common in the general area.
| Rock Type | Rank | Composition | Texture | Relationship | Siltstone | 1 | Host |
|---|
Dec 07, 2005 (G Meyer) - The mineralization occurs in sediments including Archean argillite (with graphite). These rocks are in contact with coarse-grained mafic flow (gabbro?). The mafic volcanic flow (gabbro?)/sedimentary rock contact at the showing strikes north-northwest and both dip and stratigraphical top appear to be to the west. To the east of the showing, the plane of an anticline fold axis (Sudbury - Cobalt Map 2361) strikes to the north-northwest. The fold suggests repetition of similar favourable geology on the eastern side of the fold axis. A possible VMS style mineralization environment is indicated by the occurrence of lapilli/agglomerate volcanic rock, which outcrops approximately 200 m to the south-southeast of the showing. The clasts, which constitute a high proportion of the volcanic rock, are strongly deformed to rod shapes, oval in cross section. Stretching and flattening of the clasts are in the plane of schistosity, which is folded at the site and dips predominantly 60e to the west. The long axis of the clasts, which is at least 10 x the other two oval diameters, plunges 60e to 70e to the north. Follow-up exploration at the showing and other sites in the area should be mindful of the stretched nature of the clasts. The configuration of the clasts may suggest similar deformation for sulphide bodies in the area.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Cobaltite | Economic | Ore | ||||
| 2 | Chalcopyrite | Economic | Ore | ||||
| 3 | Sphalerite | Economic | Ore | ||||
| 4 | Galena | Economic | Ore | ||||
| 5 | Gold | Economic | Ore | ||||
| 6 | Niccolite | Economic | Ore | ||||
| 1 | Pyrite | Economic | Gangue | ||||
| 2 | Pyrrhotite | Economic | Gangue |
Nov 13, 2009 (G Meyer) - >1% Ni obtained in one assay assumed to be niccolite. Liberty Mines reports that the deposit consists of veins of cobaltite typically grading up to 11% Co over 1 to 1.5 m with intersections of 19.46 m averaging 1.1% Co. It also contains intersections of chalcopyrite containing 11.9% Cu over 3.1 m as well as varying credits of Ni up to 1%
File - Resident Geologist files CO-2500, CO-2501
Publication Number: Date:
Author:
Publisher Name:
Location: Kirkland Lake RGP office
Mono - Report of Activities 2002, Resident Geologist Program, Kirkland Lake Regional Resident Geologist Report: Kirkland Lake and Sudbury Districts
Publication Number: OFR6114 Date: 2003
Author: Meyer G., Cosec M., Grabowski G.P.B., Guindon D.L., Beauchamp S.A., Chaloux E.C.
Publisher Name: Ontario Geological Survey
Location:
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