Little Vein; Little Lead Prospect, Valdez Creek Mining District, Matanuska-Susitna Borough, Alaska, USAi

Regional Level Types
Little Vein; Little Lead Prospect	Prospect
Valdez Creek Mining District	Mining District
Matanuska-Susitna Borough	Borough
Alaska	State
USA	Country

The Little Vein was reached from underground workings at the Golden Zone mine.
Location: The Little Vein prospect is at an elevation of about 3,500 feet, on the southeast bank of Bryn Mawr Creek. The site is in sec. 3, T. 20 S., R. 11 W., of the Fairbanks Meridian. The location is accurate to within 500 feet.
Geology: The Little Vein prospect is about 200 feet south of the Golden Zone breccia pipe (HE043). It is a quartz-sulfide vein and stringer lode that carries good, but erratic, gold values. The deposit is at the sheared contact of a quartz-biotite porphyry dike that intrudes hornfelsed Triassic sedimentary rocks. The sulfide minerals are arsenopyrite, pyrite, and chalcopyrite. Assay values range from 0.16 to 2.58 ounces of gold per ton, 2.4 to 11.6 ounces of silver per ton, and up to 33.22% arsenic (Ross, 1933). The Little Vein deposit probably is a continuation of the deposit at the Golden Zone mine.
Workings: There has been limited exploration by prospect pits and a short, now caved adit. Assay values range from 0.16 to 2.58 ounces of gold per ton, 2.4 to 11.6 ounces of silver per ton, and up to 33.22% arsenic (Ross, 1933).
Age: Synchronous with the Golden Zone mineralization, dated as Late Cretaceous.
Alteration: Sericitization.

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

Other Databases

Link to USGS - Alaska:	HE045

Other Regions, Features and Areas containing this locality

References