Unnamed (near VABM Fort)

Prospect, Inactive

Commodities and mineralogy

Main commodities Pb; Zn
Gangue minerals iron oxides

Geographic location

Quadrangle map, 1:250,000-scale BR
Quadrangle map, 1:63,360-scale D-1
Latitude 66.7578
Longitude -141.1196
Nearby scientific data Find additional scientific data near this location
Location and accuracy 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.

Geologic setting

Geologic description

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gossan, about a 1/4 mile long and approximately 20 feet wide, in dolomite and limestone (K.H. Clautice and J.C. Clough, unpublished field data, 1992).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).
Geologic map unit (-141.122223084653, 66.7575501156527)
Mineral deposit model Mississippi Valley type lead-zinc deposit? (Cox and Singer, 1986; model 32?)
Mineral deposit model number 32?
Alteration of deposit Dolomitization and iron oxides.

Production and reserves

Workings or exploration At least two shallow, hand-dug trenches mark the ends of a 1/4 mile-long gossan.
Indication of production None

References