Unnamed (southeast of upper Sheep Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu; Mo
Other commodities Pb
Ore minerals bornite; galena; malachite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale WI
Quadrangle map, 1:63,360-scale C-4
Latitude 67.5164
Longitude -151.9438
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 4,700 feet, about 500 feet west-southwest of the top of hill 4717 in the NE1/4 section 14, T. 31 N., R. 20 W., of the Fairbanks Meridian. The occurrence is the site of sample 11 in Dillon and others (1981 [AOF 133B]). The location is accurate within one-half mile.

Geologic setting

Geologic description

This occurrence consists of a stockworks of synmetamorphic(?) quartz veins that cut calcite-quartz schist. The veins contain malachite, bornite, and galena (Dillon and others, 1981, samples 10 and 11 [AOF 133B]). Metasiltstone nearby is malachite stained and contains disseminated, partially oxidized, copper sulfides. A grab sample taken from an outcrop contains up to 1% copper and 30 ppm molybdenum. The samples do not contain significant lead. The occurrence is near the contact between Middle Devonian(?) siliceous clastic rocks and Devonian, Skajit Limestone (Dillon and others, 1986).
Geologic map unit (-151.946553143259, 67.5159432082281)
Alteration of deposit Oxidation of copper mineral(s).

Production and reserves

Workings or exploration Only surface sampling.
Indication of production None

References