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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  14-Apr-2012 by Nicole Barlow (NB)

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NMI 082M12 Ag1
Name FOGHORN, GOPHER Mining Division Kamloops
BCGS Map 082M051
Status Past Producer NTS Map 082M12W
Latitude 051º 32' 05'' UTM 11 (NAD 83)
Longitude 119º 57' 14'' Northing 5713427
Easting 295139
Commodities Silver, Lead, Zinc, Copper, Gold Deposit Types
Tectonic Belt Omineca Terrane Kootenay
Capsule Geology

The Foghorn Mine is located on the north easten slope of Foghorn Mountain, approximately 14 kilometres south east of the community of Clearwater.

In 1988, a program of diamond drilling, totalling 1675.9 metres, was completed by Goldspring Resources Ltd.

Foghorn Mountain is underlain by metavolcanics derived largely from intermediate crystal-lithic tuffs and porphyritic flows of the Devonian to Mississippian part of the Eagle Bay Formation. The rocks are pale to medium green chlorite-sericite schist, quartz- sericite schist, chert, phyllite and sericitic quartzite. These comprise a relatively flat lying plate, occurring as a gentle north-plunging synform. To the west, separated by an east-dipping thrust fault, are basalt, gabbro, chert and minor sediments of the Fennell Formation. The Middle Cretaceous Baldy Batholith lies to the south.

The mineralized zone, measuring 400 by 150 metres and trending 030 degrees contains several narrow discontinuous steeply dipping quartz veins with spotty to sub-massive lenses of galena, sphalerite and lesser chalcopyrite, pyrite, argentite and pyrrhotite. The veins are 5 to 20 centimetres wide, seldom exceed a few metres in length and generally strike 040 degrees. Occassionally, intersecting shear zones or breccia zones show areas of wider mineralization. A selected sample of an 8 to 20 centimetre wide vein containing massive galena and sphalerite assayed 36.45 per cent lead, 12.55 per cent zinc, 1.06 per cent copper, 10.65 grams per tonne silver and 0.34 grams per tonne gold (Assessment Report 7813).

In the mineralized zone, alteration shows a distinctive buff to orange-brown colour to the host phyllites and quartz-sericite schists and bright orange-brown limonite is common along fracture planes. A sample of the host rock in the zone of alteration and veining, which contained no visible mineralization, assayed 0.48 per cent lead, 11.0 grams per tonne silver and 0.048 per cent copper (Assessment Report 7813).

EMPR AR 1913-212; 1915-211; *220-221; 1916-266,518; 1917-236,450; 1924-150; 1958-30
EMPR ASS RPT 3820, *4876, 7404, 7757, 7758, *7813, 11381, 17328, 18320
EMPR EXPL 1979-114-115; 1983-168
EMPR FIELDWORK 1984, pp. 67-76; 1985, pp. 89-94
EMPR GEM 1970-302; 1974-98
EMPR GEOL 1977-1981, p. 55,Fig. 18
EMPR MAP 53; 56
EMPR OF 1986-5
EMPR PF (Goldspring Resources Ltd. (unknown): Foghorn Mountain Property Summary; Simple, L.C. (unknown): Preliminary Geology Showing Old Workings and Location of Samples - Map; Map by G.C. Singhai; Reeve, A.F. (1984-08-30): Share Consolidation 5 Old = 1 New Proposed; Foghorn Mountain Property, April 29, 1988, Prospectus, Gold Spring Resources Ltd.; Goodall, G.N. (1988-12-15): Diamond Drilling and Geochemical Report on the Foghorn Mountain Prospect; Wild, C. (1989-09-26): Letter regarding Foghorn being optioned to Minnova; Hill, A. (1992-02-10): Foghorn Property Examination)
GSC MAP 48-1963
GSC OF 637
GSC SUM RPT 1930, pp. 143-144
Dickie, G.J., Preto, V.A. and Schiarizza, P. (in preparation 1986): Mineral Deposits of the Adams Plateau-Clearwater Area
Preto, V.A. and Schiarizza, P. (1985): Geology and Mineral Deposits of the Adams Plateau-Clearwater Region in GSA Cordilleran Section Meeting May 1985, pp. 16-1 to 16-11