Honolulu Prospect, Valdez Creek Mining District, Matanuska-Susitna Borough, Alaska, USAi

Regional Level Types
Honolulu Prospect	Prospect
Valdez Creek Mining District	Mining District
Matanuska-Susitna Borough	Borough
Alaska	State
USA	Country

Location: The Honolulu prospect is at an elevation of about 2,950 feet in the headwaters of Honolulu Creek. The location is accurate to within 0.5 mile. The map site is in the SW1/4 of sec. 4, T. 22 S., R. 10 W., of the Fairbanks Meridian. This is location 36 of Cox and others, 1989; location D-22 of Balen (1990: OFR 34-90).
Geology: The area of the Honolulu prospect is underlain by Lower Cretaceous to Upper Jurassic graywacke and argillite cut by Tertiary granites. The deposit is in highly altered granitic rock and consists of sulfide-rich quartz veinlets (Balen and others, 1991). The sulfide minerals are chalcopyrite, galena, and sphalerite. High tin assays suggest that cassiterite also is present. One channel sample collected across a 60-foot exposure of altered granite contained 1.09 ounce of silver per ton, 0.03 ounce of gold per ton, 1.5% copper, and 250 ppm tin. The highest grade samples contained 141 ounces of silver per ton, 0.05 ounce of gold per ton, 2.3% copper, 6.3% lead, 6% zinc, and 795 ppm tin (Balen, 1990: OFR 34-90; Balen and others, 1991).
Workings: Surface workings, and two shallow Winkie holes drilled in the mid-1970's (unpublished report for the New Alaska Syndicate, 1976). One channel sample collected across a 60-foot exposure of altered granite contained 1.09 ounce of silver per ton, 0.03 ounce of gold per ton, 1.5% copper, and 250 ppm tin. The highest grade samples contained 141 ounces of silver per ton, 0.05 ounce of gold per ton, 2.3% copper, 6.3% lead, 6% zinc, and 795 ppm tin (Balen, 1990: OFR 34-90; Balen and others, 1991).
Age: The sulfide minerals are in altered Tertiary granite.
Alteration: Extensive silicification and phyllic alteration.

Commodities (Major) - Ag, Au, Cu; (Minor) - Pb, Sn, Zn
Development Status: None
Deposit Model: Polymetallic veins (Cox and Singer, 1986; model 22c)

Other Databases

Link to USGS - Alaska:	HE131

Other Regions, Features and Areas containing this locality

References