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File Created: 06-Mar-2023 by Garry J. Payie (GJP)
Last Edit:  31-Jul-2023 by Garry J. Payie (GJP)

Summary Help Help

NMI
Name ASHMAN LAKE Mining Division Fort Steele
BCGS Map 082G010
Status Showing NTS Map 082G01E
Latitude 049º 02' 09'' UTM 11 (NAD 83)
Longitude 114º 09' 15'' Northing 5435340
Easting 708000
Commodities Copper Deposit Types E04 : Sediment-hosted Cu
Tectonic Belt Foreland Terrane Ancestral North America
Capsule Geology

The Ashman Lake showing is located about 87 kilometres southeast of Fernie and 500 metres north of Ashman Lake.

The Ashman Lake showing is underlain by undivided strata of the Helikian Purcell Supergroup consisting of Nicol Creek, Sheppard, Gateway, Phillips, and/or Roosville formations. Undivided Upper Purcell strata correlates with the Dutch Creek Formation.

Copper, as chalcopyrite, or chalcocite and bornite, is present in widespread small occurrences throughout the region often associated with quartzitic phases of the sediments, and in many cases with the dikes and sills. Mineralization occurs as disseminations and fine fracture fillings in quartzite beds, in shales, and to some degree in dioritic dikes and quartz vein material. Argillites appear to favour the chalcocite-bornite association. Much of the host stratigraphy was historically reported as being Grinnell Formation.

WORK HISTORY

From 1968 to 1969, Akamina Minerals Ltd. conducted a regional mapping and geochemical program on the "Grinnell Formation", a section of which underlies the claims held by Mark V and Thor Explorations around 1970 (Assessment Report 3336). Widespread occurrences of copper mineralization were located in the Grinnell and neighbouring formations. Some of these were trenched. Most of the resulting assays appear to have been in the 0.2 to 0.9 per cent copper range, with occasional grab samples assaying up to 5 per cent copper (Property File Document 810672). The mineralization is reported to have occurred as disseminations and fine fracture fillings in quartzite beds, in shales, and to some degree in dikes and quartz vein material.

Bibliography
EMPR ASS RPT 2703, 2746, 2749, 3160, *3336
EMPR GEM 1970-477
EMPR PFD 650043, *810672, 822848, 861253, 861254
GSC MEM 336
GSC Open File 7476
GSC P 61-24
*Internal Report to the Board of Management, Akamina Minerals Limited on the Copper Project – Clarke Range, March 20, 1969 (Figure 5, Property File Document (PFD 810672))

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