Unnamed (west of upper Hidden Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Mo
Other commodities Au
Ore minerals molybdenite

Geographic location

Quadrangle map, 1:250,000-scale TR
Quadrangle map, 1:63,360-scale B-6
Latitude 58.4002
Longitude -133.7474
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is along the west side of upper Hidden Creek valley. It is just east of the center of section 18, T.40 S., R.71 E. of the Copper River Meridian. The map location is the approximate center of several reported occurrences and is accurate within 1/4 mile.

Geologic setting

Geologic description

This occurrence is in the Coast Range plutonic-metamorphic complex which consists of high-grade schist and gneiss intruded by Cretaceous and Tertiary granodiorite (Brew and Ford, 1974, 1984). In 1985, the U.S. Bureau of Mines found granite float in the area that contained sparse molybdenite. Their sampling indicated anomalous values of molybdenum, barium, copper and gold. Limited reconnaissance failed to locate the bedrock source of the molybdenite-bearing float (Clough, 1990). Recent studies of other molybdenite occurrences in this area (TR002, TR003, TR006, TR007) suggest that molybdenite mineralization is associated with Paleocene-Eocene (63-50 Ma) magmatism (Miller and others, 1997).
Geologic map unit (-133.749140237368, 58.399882454166)
Mineral deposit model Porphyry Mo (Cox and Singer, 1986; model 21b)
Mineral deposit model number 21b
Age of mineralization Recent studies of other molybdenite occurrences in this area (TR002, TR003, TR006, TR007) suggest that molybdenite mineralization is associated with Paleocene-Eocene (63-50 Ma) magmatism (Miller and others, 1997).

Production and reserves

Workings or exploration There are no surface or underground workings and exploration has been limited.
Indication of production None

References