Unnamed Prospect (ARDF - HE097; headwaters of Virginia Creek), Bonnifield Mining District, Denali Borough, Alaska, USAi

Regional Level Types
Unnamed Prospect (ARDF - HE097; headwaters of Virginia Creek)	- not defined -
Bonnifield Mining District	Mining District
Denali Borough	Borough
Alaska	State
USA	Country

Location: This prospect is at an elevation of about 4,000 feet in the headwaters of Virginia Creek, a tributary of the Wood River. The site is in sec. 32, T.12 S., R. 1 W., of the Fairbanks Meridian. The location is accurate to within one-quarter mile.
Geology: This deposit is a steeply-dipping stratabound massive sulfide horizon up to 13.1 feet thick in pelite and quartzite of the lower Paleozoic to possibly Upper Precambrian Birch Creek Schist (Wilson and others, 1998). The metasediments are cut by a lower Tertiary to Cretaceous intrusive stock on the southeastern boundary of the prospect area. The sulfide minerals are chalcopyrite, galena, pyrrhotite, and sphalerite. At least six drill holes have tested the deposit. Samples contain up to 0.53% copper, 1.89% lead, 6.51% zinc, 185.1 grams of silver per ton and 0.38 grams of gold per ton (www.grayd.com, 1999).
Workings: Geophysical and geochemical surveys have outlined the sulfide zone. At least six holes have been drilled at the prospect. Samples contain up to 0.53% copper, 1.89% lead, 6.51% zinc, 185.1 grams of silver per ton and 0.38 grams of gold per ton (www.grayd.com, 1999).
Age: Mineralization was probably syngenetic with host rocks that are early Paleozoic to possibly Late Precambrian.

Commodities (Major) - Ag, Cu, Pb, Zn
Development Status: None
Deposit Model: Kuroko massive sulfide (Cox and Singer, 1986; model 28a)

Other Databases

Link to USGS - Alaska:	HE097

Other Regions, Features and Areas containing this locality

References