Unnamed Occurrence (ARDF - TK033; near VABM West Watana), Valdez Creek Mining District, Matanuska-Susitna Borough, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - TK033; near VABM West Watana)	- not defined -
Valdez Creek Mining District	Mining District
Matanuska-Susitna Borough	Borough
Alaska	State
USA	Country

MAS/MIL number 20760087.
Location: This occurrence is at an elevation of about 5,000 feet,on a north-trending ridge about 1 3/4 miles west of VABM Watana. The occurrence is near the center of the SE1/4 sec. 34, T. 22 S., R. 2 W., Fairbanks Meridian. The location is accurate to within 1/4 mile. This is locality B18 of Kurtak and others (1992).
Geology: The rocks in the vicinity of this occurrence are Triassic metabasalt (Csejtey and others, 1978). Immediately to the west, the metabasalt is in fault contact with Upper Jurassic sedimentary and volcanic rocks. The metabasalt is iron stained and contains quartz veins and disseminated pyrite and arsenopyrite (Kurtak and others, 1992). Malachite locally coats the outcrop. Rock samples collected by the U.S. Geological Survey contain 20 parts per million molybdenum (Miller and others, 1978). Samples collected by the U.S. Bureau of Mines contain up to 765 parts per million arsenic and 193 parts per mission copper, but no molybdenum (Balen, 1990). As of January 1, 2000, a block of approximately 96 state mining claims covered this and adjacent prospects (Northern Associates Inc., written commun., 2001).
Workings: Sampling by the U.S. Bureau of Mines and U.S. Geological Survey (Miller and others, 1978; Balen, 1990). As of January 1, 2000, a block of approximately 96 state mining claims covered this and adjacent prospects (Northern Associates Inc., written commun., 2001).
Age: Occurs in Triassic metabasalt.
Alteration: Oxidation of copper mineral; iron oxides.

Commodities (Major) - Cu, Mo
Development Status: None
Deposit Model: Basaltic copper? (Cox and Singer, 1986; model 23?)

Other Databases

Link to USGS - Alaska:	TK033

Other Regions, Features and Areas containing this locality

References