PMRGX-16

Occurrence, Inactive

Commodities and mineralogy

Main commodities Sb; Zn
Other commodities As; Ba

Geographic location

Quadrangle map, 1:250,000-scale PM
Quadrangle map, 1:63,360-scale C-1
Latitude 55.747
Longitude -160.022
Nearby scientific data Find additional scientific data near this location
Location and accuracy This site is located on the Alaska Peninsula on the west side of Clark Bay approximately 2 miles north of Waterfall Point. It is referred to as PMRGX-16 by Wilson and others (1988, locality 65). The locality is accurate to within 1,000 feet.

Geologic setting

Geologic description

Wilson and others (1988) describe this occurrence as a vertical, sericitically altered, zone containing abundant sulfides in volcaniclastic sandstone and siltstone (Wilson and others, 1988). The sedimentary rocks probably are part of the Paleocene to Eocene Tolstoi Formation (Wilson and others, 1995). Amygdaloidal andesite flows are also present in the area. One sample collected by the U.S. Geological Survey in the mid-1980s was reported to be anomalous in antimony, arsenic, barium, and zinc (Wilson and others, 1988).
Geologic map unit (-160.024015848213, 55.746189007375)
Age of mineralization Tertiary.
Alteration of deposit Sericite alteration is present in an altered zone within sandstone and siltstone.

Production and reserves

Workings or exploration Rock sample 83AWs91, collected by the U.S. Geological Survey in the mid-1980s, is reported to be anomalous in antimony, arsenic, barium, and zinc (Wilson and others, 1988).
Indication of production None

Additional comments

The site is located on land selected by the Aleut Corporation.

References