West Hill; Chester; Eva; Taku River Prospect, Juneau Mining District, Juneau, Alaska, USAi

Regional Level Types
West Hill; Chester; Eva; Taku River Prospect	Prospect
Juneau Mining District	Mining District
Juneau	City Borough
Alaska	State
USA	Country

Location: This prospect is on the southeast flank of Kluchman Mountain near the Taku River. It is in the SW1/4SW1/4 section 21, T.38 S., R.71 E. of the Copper River Meridian. The prospect was described in MAS/MILS record 0021130014; it is also listed as Alaska Kardex file number 112-065. This is location T003 of Wells and others (1986). The location is accurate within 1/4 mile. This is possibly the Taku River prospect described by Cobb (1978 [OFR 78-698]).
Geology: The West Hill prospect 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, 1984). Brew and Ford (1974) indicate that the area consists of tonalitic to granitic plutons that intrude and contact metamorphose high-grade, regionally metamorphosed, rocks derived from volcanic, pelitic, and minor carbonate strata of unknown protolith age. Roof pendants of the metamorphic rocks are common, as are mafic and aplite dikes (Miller and others, 1997). Development consists of a shaft, a 130-foot tunnel, short crosscuts, and trenches. The prospect consists of quartz veins that cut schist and slate. The veins are 1 foot to 10 feet thick, average about 2 feet thick, and contain sphalerite, pyrrhotite, minor pyrite, galena, and chalcopyrite, and small amounts of gold and silver (Wells and others, 1986).
Workings: Development consists of a shaft, a 130-foot tunnel, short crosscuts, and trenches (Wells and others, 1986).

Commodities (Major) - Ag, Au, Cu, Pb, Zn
Development Status: Undetermined.
Deposit Model: Polymetallic vein (Cox and Singer, 1986; model 22c)

Other Databases

Link to USGS - Alaska:	TR004

Other Regions, Features and Areas containing this locality

References