Unnamed (upper Amy Creek)

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals malachite; pyrite

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale C-8
Latitude 61.7059
Longitude -143.8434
Nearby scientific data Find additional scientific data near this location
Location and accuracy This prospect is is on the lower east side of the terminus of the glacier at the head of Amy Creek. It is at an elevation of about 3,800 feet, 700 feet south-southeast of the center of section 7, T. 2 S., R. 9 T. of the Copper River Meridian. This is locality 163 of MacKevett (1976) and locality 10 of MacKevett and others (1978). The location is accurate to within about 100 feet. Cobb and MacKevett (1980) included this prospect under the name 'Amy Cr.'.

Geologic setting

Geologic description

The deposit at this prospect consists of pyrite-bearing veins and altered zones that contain some secondary copper minerals cut Permian sedimentary rocks and Triassic gabbro (Moffit and Mertie, 1923; MacKevett, 1976). Samples of the mineralization contained up to 1.5 parts per million (ppm) silver and 2,000 ppm copper.
Geologic map unit (-143.845491784568, 61.7054399638233)
Mineral deposit model Vein
Age of mineralization Post-Triassic; some of the host rocks of the veins are Triassic in age.
Alteration of deposit Oxidation.

Production and reserves

Workings or exploration Only limited surface sampling.
Indication of production None

Additional comments

The locality is in the Wrangell-Saint Elias National Park and Preserve.

References