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File Created: 13-Jul-1988 by Larry Jones (LDJ)
Last Edit:  28-Dec-1988 by Dorthe E. Jakobsen (DEJ)

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NMI
Name SILVER BAR Mining Division Alaska, USA
BCGS Map 104B010
Status Showing NTS Map 104B01E
Latitude 056º 03' 39'' UTM 09 (NAD 83)
Longitude 130º 08' 46'' Northing 6213442
Easting 428634
Commodities Copper, Lead Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Silver Bar claim is located north of the West Fork trail and 2 kilometres north of Salmon River bridge, in southeastern 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 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 seq- uence 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 Hyder intrusives and lamprophyre dykes.

The showing consists of a quartz vein, hosted by a Texas Creek porphyry dyke, striking 140 degrees and dipping 45 degrees east. The vein has been exposed along strike for 76 to 91 metres, a vertical extent of 53 metres and is up to 1 metre wide. The vein is minera- lized locally with shoots and small pockets and bands containing chalcopyrite, galena and pyrite with associated barite.

Bibliography
EMPR BULL 58; 63
EMPR FIELDWORK 1983, pp. 149-165; 1984, pp. 316-342; 1985, pp. 217-219
EMPR OF 1987-22
EMPR REGIONAL PF (Mineral Terranes of Alaska, 1982 Plate F; Sutherland-Brown, A., (1951): Cordilleran Structure in Canada and Alaska)
GSC MEM 175
GSC P 89-1E, pp. 145-154
CIM SPEC VOL #8, pp. 149-170, 215-229
CJES VOL 10, Part 1, 1973, pp. 408-420
USGS BULL 722; 800; *807-93; 1024; 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)

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