MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 104B 159

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

SUMMARY

Summary Help


		NMI
Name	96 GROUP	Mining Division	Alaska, USA
		BCGS Map	104B010
Status	Showing	NTS Map	104B01E
Latitude	056º 02' 28''	UTM	09 (NAD 83)
Longitude	130º 04' 10''	Northing	6211171
		Easting	433373
Commodities	Lead, Zinc, Copper	Deposit Types	I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt	Intermontane	Terrane	Stikine

Capsule Geology

The showing on the Ninety-six group of claims is located on the west side of Mineral Hill, east of Texas Creek 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 se- quence of argillite and siltstone infolded along a synclinal axis. The sequence is intruded by the Early Jurassic Texas Creek grano- diorite, Eocene granitic Hyder intrusives and lamprophyre dykes.

A vein was intersected in a 19 metre adit in a Texas Creek grano- diorite dyke. The vein occurs in a brecciated zone as mineralized stockwork stringers with no well-defined walls. The vein is 1.5 metres thick in outcrop above the adit. The vein strikes 170 degrees, dips 40 degrees east and has been traced on the surface for 61 metres. Mineralization consists of galena, sphalerite, tetrahedrite, chalco- pyrite and pyrite with galena most abundant.

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; 1024-140; 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)