Unnamed (northwest of the mouth of Quartz Creek)

Occurrence, Probably inactive

Commodities and mineralogy

Main commodities Cu
Other commodities Ag; Au
Ore minerals tennantite-tetrahedrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale NM
Quadrangle map, 1:63,360-scale C-3
Latitude 64.5666
Longitude -166.0162
Nearby scientific data Find additional scientific data near this location
Location and accuracy A vein containing gray copper was reported by Collier and others (1908) on a steep bluff above Norton Sound about one-half mile west of the mouth of Quartz Creek (NM122). The vein is only approximately located, probably within a third of a mile. This occurrence was included as part of locality 63 by Cobb (1972 [MF 463], 1978 [OFR 78-93]).

Geologic setting

Geologic description

A quartz-sulfide (sulfosalt) vein several feet thick was reported by Collier and others (1908, p. 215) to be exposed on the bluffs above Norton Sound a short distance west of Quartz Creek. The vein was concordant to schistosity at a contact between chloritic and graphitic schist layers. Assays reported only trace amounts of gold and silver. The sulfide or sulfosalt mineral is described only as gray copper, most probably tennantite. The vein was lenticular and reportedly 'thinned rapidly' (Collier and others, 1908).
Geologic map unit (-166.018810712465, 64.5658229374219)
Mineral deposit model Quartz-sulfide (sulfosalt) vein in metamorphic rocks.
Age of mineralization Because the vein is concordant to metamorphic foliation, it could be older than mid-Cretaceous, but a younger age is also possible.

Production and reserves

Workings or exploration Prospecting activity occurred in the area shortly after the discovery of gold at Nome in 1898. The vein was discovered about 1903 or earlier.
Indication of production None

References