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File Created: 08-Oct-1992 by Marc Deschenes (MDE)
Last Edit:  08-Oct-1992 by Marc Deschenes (MDE)

Summary Help Help

NMI
Name FROBISHER Mining Division Atlin
BCGS Map 114P072
Status Showing NTS Map 114P13E
Latitude 059º 45' 01'' UTM 08 (NAD 83)
Longitude 137º 44' 27'' Northing 6626783
Easting 346001
Commodities Copper, Cobalt, Gold Deposit Types
Tectonic Belt Insular Terrane Alexander
Capsule Geology

This showing occurs four kilometres north of the Windy Craggy volcanogenic massive sulphide deposit (114P 002), and consists of several gossanous zones of massive and disseminated sulphide exposed in south facing cliff faces along the north wide of Frobisher glacier over a length of two kilometres. The mineralization is hosted by a sequence of silicified, clay altered, and to a lesser extent, chloritized pillow basalts of Upper Triassic age, intercalated with less calcareous argillites. Mineralization occurs in the area hosted by both the Middle and Lower Tats Group. Mineralization occurs as either fine grained dissiminated to massive sulphides with minor silicification, clay alteration plus or minus chloritization, or coarse grained sulphide veinlets accompanied by silicification, which may be shear related. Sulphide content up to 70 per cent pyrite and pyrrhotite. Mineralized zones appear as a series of gossanous zones in the cliff faces above glaciated terrain. Samples were collected from the abundant talus below these cliffs. Assayed samples showed no anomalous concentrations of base or precious metals.

Bibliography
EMPR FIELDWORK 1993-1, pp. 217-228
GSC OF 2191
EMPR PFD 650364

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