Unnamed Occurrence (ARDF - VA055; near foot of Tsina Glacier), Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - VA055; near foot of Tsina Glacier)	- not defined -
Prince William Sound Mining District	Mining District
Valdez-Cordova Census Area	Census Area
Alaska	State
USA	Country

Location: This occurrence is on the south side of the foot of Tsina Glacier. It is near the center of the south border of section 17, T. 7 S., R. 3 W., of the Copper River Meridian. This occurrence is probably located to within one-quarter mile. It is locality 79 of Winkler and others (1981 [OFR 80-892-B]).
Geology: Iron-stained lenses and quartz veins in mafic metavolcanic rocks of the Late Cretaceous Valdez Group contain pyrite, chalcopyrite, galena, and sphalerite (Winkler and others, 1981 [OFR 80-892-B]). The sulfide minerals are disseminated in the mafic metavolcanic rocks and in the quartz veins. The metavolcanic rocks probably represent ocean floor basalts that were accreted with the flysch of the Valdez Group (Winkler and others, 1981[OFR 80-892-A]).
Workings: Only reconnaissance surface examination.
Age: Late Cretaceous; the host metavolcanic rocks probably represent ocean floor basalts that were accreted with the flysch of the Valdez Group (Winkler and others, 1981 [OFR 80-892-A]).
Alteration: Oxidation; mineralized zones are iron stained.

Commodities (Major) - Cu; (Minor) - Ag, Pb, Zn
Development Status: None
Deposit Model: Cyprus massive sulfide (Cox and Singer, 1986; model 24a)

Other Databases

Link to USGS - Alaska:	VA055

Other Regions, Features and Areas containing this locality

References