Unnamed (in headwaters of Dry Canyon Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu; Pb; Zn
Ore minerals chalcopyrite; galena; pyrite; sphalerite

Geographic location

Quadrangle map, 1:250,000-scale SO
Quadrangle map, 1:63,360-scale D-1
Latitude 64.863
Longitude -162.455
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is near the crest of the Darby Mountains at approximately 2,675 feet elevation in the extreme eastern headwaters of Dry Canyon Creek. This locality is 0.7 miles north of Peak 2,883 and 1 mile southwest of Peak 3,273. It is locality 62 of Gamble (1988).

Geologic setting

Geologic description

This prospect occurs in feldspathic schist near the western contact of Darby pluton granite. Sphalerite, galena, chalcopyrite, and pyrite have been identified (Miller and Grybeck, 1973). Stream sediment samples from the two drainages flowing west from this occurrence contained anomalous amounts of Pb in one case, and Pb and Zn in the other. The Darby pluton is a mid-Cretaceous granodiorite and granite; K/Ar ages for the Darby pluton are 88.3 +/- 1.5 and 92.8 +/- 2.6 Ma (Berry and others, 1976). The country rocks to the pluton here are high-grade metasedimentary rocks of Paleozoic or Precambrian age (Till and others, 1986).
Geologic map unit (-162.457597210525, 64.8622916330753)
Mineral deposit model Base-metal sulfide veins or replacements in metasedimentary rocks.
Age of mineralization Not known; probably mid-Cretaceous or younger. K/Ar ages for the nearby Darby pluton are 88.3 +/- 1.5 and 92.8 +/- 2.6 Ma (Berry and others, 1976).

Production and reserves

Workings or exploration No workings or exploration acitivities are known but regional stream sediment geochemical and airborne radiometric surveys may have been completed in the area.
Indication of production None