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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  28-Dec-1988 by Dorthe E. Jakobsen (DEJ)

Summary Help Help

BCGS Map 104B010
Status Showing NTS Map 104B01E
Latitude 056º 01' 36'' UTM 09 (NAD 83)
Longitude 130º 02' 29'' Northing 6209537
Easting 435097
Commodities Gold, Silver, Zinc, Lead, Copper, Tungsten Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Alaska-Premier workings are located south of Daly creek, 13 kilometres north of Hyder, Alaska.

Located in the Intermontane Belt, the area, bounded on the west by the Coast Crystalline Complex and on the east by the Bowser Basin, is part of the volcanic arc assemblage of the Stikinia Terrane.

The showing is hosted by the Upper Triassic to Lower Jurassic Hazelton Group, Unuk River Formation metavolcanics. The Hazelton Group is a northwest trending steeply east dipping belt of folded andesitic lapilli tuffs, flows, and breccia containing a thick sequence of argillite and siltstone infolded along a synclinal axis. The sequence is intruded by the Early Jurassic Texas Creek plutonic suite of dacitic porphyry dykes and sills, Eocene granitic intrusives and lamprophyre dykes.

An adit driven on a 12.2 metre thick porphyry dyke exposed quartz veinlets, up to 5 centimetres wide, mineralized with pyrite, sphal- erite, galena, pyrrhotite and considerable gold. The dyke strikes 120 degrees and dips 50 degrees east. Above the tunnel on the old Ready Money claim, a pit exposes a rich pocket of mineralization. The host rock is fractured and silici- fied and contains quartz veins mineralized with blebs of pyrite, sphalerite, galena, pyrrhotite and chalcopyrite. Selected specimens are reported to have contained up to 1199.8 grams per tonne gold (USGS Bulletin 807).

Similar mineralization, with the addition of tetrahedrite, is exposed in a shear zone at 370 metres elevation.

Surface mineralization consists of pockets or lenses of semi- massive pyrite and arsenopyrite, fine grained pyrrhotite, sphalerite, and galena with chalcopyrite rimming the other sulphides. Quartz- carbonate veining and chlorite alteration is associated with mineral- ization.

The best assay obtained from exploration in 1979 was from a grab sample of the lower adit muckpile. This sample assayed 459 grams per tonne silver and 14 per cent lead and zinc (Houston Oil and Minerals Corp., 1979).

Scheelite occurs as rare grains in the veins on the property.

EMPR AR 1923-A87
EMPR BULL 58; 63
EMPR FIELDWORK 1983 pp.149-165; 1984 pp.316-342; 1985 pp.217-219
EMPR OF 1987-22; 1991-17
EMPR REGIONAL PF (Mineral Terranes of Alaska, 1982 Plate F; Sutherland-Brown, A., (1951) Cordilleran Structure in Canada and Alaska)
EMPR PF (*Report and Map by Kretschmar, D. (1979) Houston Oil and Minerals Corp.)
GSC P 89-1E, pp. 145-154
CIM SPEC VOL #8 pp.149-170, pp.215-229
CJES VOL 10, Part 1, 1973, pp. 408-420
USGS BULL *807-85,86; *1024-140; 800; 722; 1425
Brown, D.A., (1987): Geological Setting of the Volcanic-Hosted Silbak Premier Mine, Northwestern British Columbia, M.Sc. Thesis, University of British Columbia (in Property File: 104B 054)