PMRGX-22

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu; Zn

Geographic location

Quadrangle map, 1:250,000-scale PM
Quadrangle map, 1:63,360-scale C-2
Latitude 55.712
Longitude -160.573
Nearby scientific data Find additional scientific data near this location
Location and accuracy The map site of this occurrence is at an elevation of about 1,200 feet on the northeast side of the ridge between Lawrence Creek and Grass Valley. It is in the NE1/4 of sec. 4, T. 52 S., R. 73 W. Seward Meridian. It is referred to as PMRGX-22 by Wilson and others (1988, locality 70). The location is accurate to within 1200 feet.

Geologic setting

Geologic description

This occurrence represents a group of four samples collected on the periphery of an altered silcic (silicified?) pluton intruding the Paleocene to Eocene Tolstoi Formation (Wilson and others, 1988; 1995). The northernmost of the four samples was from a basalt(?) plug or sill. The samples were collected by the U.S. Geological Survey in the mid-1980s and were reported to be anomalous in copper and zinc (Wilson and others, 1988).
Geologic map unit (-160.57502493254, 55.7111779621151)
Alteration of deposit Silicification?

Production and reserves

Workings or exploration Rock samples 84ACe194-197, collected by the U.S. Geological Survey in the mid-1980s were reported to be anomalous in copper and zinc (Wilson and others, 1988).
Indication of production None

Additional comments

The site is located near the boundary between state land and the Alaska Peninsula National Wildlife Refuge.

References