Unnamed Occurrence (ARDF - SR057; head of Upper Carmen River), Prince William Sound Mining District, Anchorage, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - SR057; head of Upper Carmen River)	- not defined -
Prince William Sound Mining District	Mining District
Anchorage	Borough
Alaska	State
USA	Country

Location: This occurrence is at an elevation of about 3,000 feet at the head of Upper Carmen River. It is in the SW1/4 section 19, T. 9 N., R 5 E., of the Seward Meridian. This is location S-173 of Jansons and others (1984) and is accurate to within a quarter of a mile.
Geology: The country rock at this occurrence is the highly folded, well-bedded Valdez Group slate and graywacke of Late Cretaceous age (Jansons and others, 1984). The deposit is a 3-foot-wide hematite-stained quartz vein that strikes N10E to N20E and dips vertically. The vein is exposed for about 20 feet and contains arsenopyrite, pyrite, chalcopyrite, and traces of gold and silver. A sample analyzed by the U.S. Bureau of Mines contained 92 ppb of gold and 52 ppb of silver (Hoekzema and Sherman, 1983). The deposit was discovered by the U.S. Bureau of Mines in 1982.
Workings: This occurrence was discovered by the U.S. Bureau of Mines in 1982 (Hoekzema and Sherman, 1983). A grab sample analyzed by the U.S. Bureau of Mines contained trace amounts of gold and silver. No other workings or assay results are reported.
Age: Cretaceous or younger; the vein cuts rocks of the Valdez Group of Late Cretaceous age.

Commodities (Major) - Ag, Au
Deposit Model: Low-sulfide Au-quartz vein (Cox and Singer, 1986; model 36a)

Other Databases

Link to USGS - Alaska:	SR057

Other Regions, Features and Areas containing this locality

References