North Carolina; Antimony Creek Prospect, Valdez Creek Mining District, Matanuska-Susitna Borough, Alaska, USAi

Regional Level Types
North Carolina; Antimony Creek Prospect	Prospect
Valdez Creek Mining District	Mining District
Matanuska-Susitna Borough	Borough
Alaska	State
USA	Country

Location: The North Carolina (Antimony Creek) prospect is at an elevation of about 3,600 feet on a spur north of upper Antimony Creek, a tributary of the East Fork Chulitna River. The map site is 0.5 mile southwest of VABM 4780 (Antimony), in sec. 14, T. 21 S., R. 10 W., of the Fairbanks Meridian. The location is accurate to within 1,000 feet. This is locality 28 and 29 of Cobb (1978: OFR 78-1062).
Geology: The country rocks in the area of the prospect consist mainly of Lower Cretaceous and Upper Jurassic, intensely deformed, metamorphosed flysch, probably several thousand meters thick (Wilson and others, 1998). The strata are intruded by felsite dikes, and a pyroxenite plug. The deposit consists of auriferous quartz-pyrite-stibnite veins that cut the flysch. A little gold also occurs in the margins of the felsite dikes. Samples contain up to 37.5% antimony and 6 ppm gold (Hawley and others, 1968), and up to 28% antimony and 520 ppb gold (Balen, 1990: OFR 34-90).
Workings: The property was explored in 1918 by two short tunnels. Samples contain up to 37.5% antimony and 6 ppm gold (Hawley and others, 1968), and up to 28% antimony and 520 ppb gold (Balen, 1990: OFR 34-90).
Age: Veins cut Upper Jurassic to Lower Cretaceous metasedimentary rocks.
Alteration: The stibnite is oxidized to stibiconite and kermesite.
Production: In 1919 approximately 3 tons of ore was stockpiled but never shipped.

Commodities (Major) - Au, Sb
Development Status: Yes; small
Deposit Model: Simple Sb (Cox and Singer, 1986; model 27d)

Other Databases

Link to USGS - Alaska:	HE133

Other Regions, Features and Areas containing this locality

References