Unnamed Occurrence (ARDF - HE048; upper Blind Creek area), Valdez Creek Mining District, Matanuska-Susitna Borough, Alaska, USAi

Regional Level Types
Unnamed Occurrence (ARDF - HE048; upper Blind Creek area)	- not defined -
Valdez Creek Mining District	Mining District
Matanuska-Susitna Borough	Borough
Alaska	State
USA	Country

This deposit is similar in some ways to the Bunkhouse and Lupin deposits (HE039 and HE038).
Location: This occurrence is at an elevation of about 3,800 feet south of upper Blind Creek, a tributary of the West Fork Chulitna River. It is in the NE1/4 of sec. 5, T. 20 S., R. 11 W., of the Fairbanks Meridian. Accuracy is to within 1,000 feet. The site is shown in Hawley and Clark (1968), and Hawley and Clark (1974).
Geology: The country rocks in the area of this occurrence are Triassic sedimentary strata that have been strongly faulted along a strand of the Blind Creek fault. The fault zone is up to 200 feet wide and approximately 3000 feet long; it is locally pyritized and limonite stained. The deposit consists of quartz-pyrite veins. The quartz is colloform in places. Surface samples from a quartz vein contained 0.06 ppm to 0.30 ppm gold and 0.5 to 1.5 ppm silver (Hawley and Clark, 1968).
Workings: Surface samples only. Surface samples from a quartz vein contained 0.06 ppm to 0.30 ppm gold and 0.5 to 1.5 ppm silver (Hawley and Clark, 1968).
Alteration: Pyritization; iron-staining.

Commodities (Major) - Ag, Au
Development Status: None
Deposit Model: Polymetallic vein or Hot-spring Ag-Au (Cox and Singer, 1986; models 22c, 25a)

Other Databases

Link to USGS - Alaska:	HE048

Other Regions, Features and Areas containing this locality

References