Unnamed Prospect (ARDF - BR001; near VABM Fort), Sheenjek Mining District, Yukon-Koyukuk Census Area, Alaska, USAi

Regional Level Types
Unnamed Prospect (ARDF - BR001; near VABM Fort)	- not defined -
Sheenjek Mining District	Mining District
Yukon-Koyukuk Census Area	Census Area
Alaska	State
USA	Country

Location: This prospect is centered about 0.1 mile west-northwest of VABM Fort in the SE1/4 section 1, T. 22 N., R. 30 E. of the Fairbanks Meridian. It extends from about 2,900 to 3,150 feet elevation. The location is accurate within several hundred feet.
Geology: This prospect is defined by a northeast-trending gossan, about a 1/4 mile long and approximately 20 feet wide, in dolomite and limestone (K.H. Clautice and J.C. Clough, unpublished field data, 1992). Proterozoic(?) to Cambrian(?) stromatolites occur in limestone float at an elevation of about 3,000 feet, between the upper and lower trenches at either ends of the gossan. A grab sample of gossan from one of the trenches contains 249 ppm lead and 927 ppm zinc (U.S. Bureau of Mines, 1995). Dark gray quartzite overlies the limestone and caps the upper 200 feet of the hill designated VABM Fort . The lithology and fossils indicate that the limestone is part of the Tindir Group (Dover, 1994).
Workings: At least two shallow, hand-dug trenches mark the ends of a 1/4 mile-long gossan.
Alteration: Dolomitization and iron oxides.

Commodities (Major) - Pb, Zn
Development Status: No
Deposit Model: Mississippi Valley type lead-zinc deposit? (Cox and Singer, 1986; model 32?)

Other Databases

Link to USGS - Alaska:	BR001

Other Regions, Features and Areas containing this locality

References