Unnamed Prospect (ARDF - SR224; near Cathead Bay; Knight Island), Prince William Sound Mining District, Valdez-Cordova Census Area, Alaska, USAi

Regional Level Types
Unnamed Prospect (ARDF - SR224; near Cathead Bay; Knight Island)	- not defined -
Prince William Sound Mining District	Mining District
Valdez-Cordova Census Area	Census Area
Alaska	State
USA	Country

Location: The prospect is located in the NE1/4 section 10, T. 2 N., R. 9 E., of the Seward Meridian. It is 15 feet above the high tide line on the southwest shore of Cathead Bay, Knight Island. This is location 233 of Cobb and Tysdal (1980) and location S-46 of Jansons and others (1984). This location is accurate to within 500 feet.
Geology: The prospect consists of disseminated pyrite and quartz-pyrite veins in greenstone of the Orca Group of early Teriary age(Nelson and others, 1985). Workings on the prospect consist of a 41-foot-long adit that strikes S50E. The adit follows a limonite-stained fracture zone that contains numerous quartz-pyrite veinlets, some as much as half an inch thick. Sulfide minerals in this zone include chalcopyrite and pyrite. Four samples collected from the adit and other nearby exposures contained between 100 ppm and 0.16 percent zinc and 14 to 520 ppm copper (Kurtak and Jeske, 1986).
Workings: The workings on the prospect consist of a 41-foot-long adit driven along a limonite-stained fracture zone. Four samples collected from the adit and other nearby exposures contained between 100 ppm and 0.16 percent zinc and from 20 to 540 ppm copper (Kurtak and Jeske, 1986).
Age: Tertiary or younger; the occurrence is in rocks of the Orca Group of Tertiary age.
Alteration: Basalt is altered to greenstone.

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

Other Databases

Link to USGS - Alaska:	SR224

Other Regions, Features and Areas containing this locality

References