PMRGX-31

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Pb; Zn
Other commodities As; Cu; Sb
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale PM
Quadrangle map, 1:63,360-scale D-1
Latitude 55.795
Longitude -160.056
Nearby scientific data Find additional scientific data near this location
Location and accuracy The map site of this occurrence is at an elevation of 850 feet, on the northeast side of a prominent ridge that extends northwest from the head of Clark Bay. The site is about 0.1 mile northeast of the center of sec. 2, T. 51 S., R. 70 W., of the Seward Meridian. It is referred to as PMRGX-31 by Wilson and others (1988, locality 79). The location is accurate to within 2,500 feet.

Geologic setting

Geologic description

At this site conglomerate, sandstone, and siltstone of the Paleocene to Eocene Tolstoi Formation are cut by quartz veins and by altered aphanitic dikes or sills (Wilson and others, 1988; 1995). Six samples collected by the U.S. Geological Survey in the mid-1980s were reported to be anomalous in antimony, arsenic, copper, lead, silver, and zinc (Wilson and others, 1988). One mile to the west, a sample of hornfelsed siltstone contained anomalous values in silver.
Geologic map unit (-160.058021763179, 55.7941887224626)

Production and reserves

Workings or exploration Rock samples 83AYb532-537 and 83AWs105b (Wilson and others, 1988) were reported to be anomalous in antimony, arsenic, copper, lead, silver, and zinc.
Indication of production None

Additional comments

This site is on land selected by the Aleut Corporation.

References