MINFILE Mineral Inventory

MINFILE Record Summary

MINFILE No 104B 062

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

SUMMARY

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		NMI
Name	STONER-CLEGG-O'ROURKE, LIBERTY	Mining Division	Alaska, USA
		BCGS Map	104B010
Status	Showing	NTS Map	104B01E
Latitude	056º 01' 56''	UTM	09 (NAD 83)
Longitude	130º 02' 02''	Northing	6210148
		Easting	435574
Commodities	Zinc, Lead, Copper	Deposit Types	I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt	Intermontane	Terrane	Stikine

Capsule Geology

The Stoner-Clegg-O'Rourke adit is located on the Liberty claim between Boundary and Daly Creeks in southeastern Alaska, United States.

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 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 Hyder intrusives and lamprophyre dykes.

A tunnel 23.0 metres long has been driven in metavolcanics. Min- eralization in dump material consists of calcite veinlets containing sphalerite, pyrite and galena and minor amounts of pyrrhotite, chalco- pyrite and tetrahedrite. Mineralization at other localities in the area has been exposed by open cuts. This mineralization, contained in bands hosted by metavolcanics, consists of disseminated pyrite and pyrrhotite and seams of calcite, sphalerite, pyrite and galena.

Bibliography

EMPR BULL 58; 63

EMPR FIELDWORK 1983, pp. 149-165; 1984, pp. 316-342; 1985, pp. 217-219

EMPR OF 1987-22

EMPR PF (Report and Map by Kretschmar, D., (1979): Houston Oil and Minerals Corp. in Stoner - 104B 160)

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; *807-88; *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)

EMPR PFD 18927, 18928, 18934, 18935, 18936, 820071