Unnamed (north of upper Smith Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Sb
Other commodities Cu; Mo
Gangue minerals carbonate minerals; sericite

Geographic location

Quadrangle map, 1:250,000-scale ID
Quadrangle map, 1:63,360-scale A-5
Latitude 62.15219
Longitude -158.37303
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on the crest of a low northeast-trending ridge that is northwest of the head of Smith Creek. It is near hill 1170 and about 0.6 mile west-southwest of the center of section 24, T. 24 N., R. 50 W., of the Seward Meridian. The location is accurate.

Geologic setting

Geologic description

This occurrence consists of a zone of hydrothermally altered olivine-bearing, basaltic andesite of the Iditarod volcanics (Miller and Bundtzen, 1988; Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The alteration which is marked by sericite and carbonate minerals occurs along N35E-striking cleavage planes that dip about 42NW. The size of the zone is uncertain. One grab sample of mineralization contained 240 parts per million (ppm) antimony, 100 ppm copper, and 7.0 ppm molybdenum (McGimsey and others, 1988).
Geologic map unit (-158.375450942134, 62.1514998492077)
Alteration of deposit Alteration marked by sericite and carbonate minerals.

Production and reserves

Workings or exploration Samples were collected by the U.S. Geological Survey and Alaska Division of Geological and Geophysical Surveys in 1985 (McGimsey and others, 1988).
Indication of production None