Unnamed (east side of Fireweed Mountain)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Cu
Ore minerals chalcopyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale B-6
Latitude 61.4576
Longitude -143.0272
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on a ridge on the east side of Fireweed Mountain. It is at an elevation of about 5,050 feet, 4,500 feet northwest of elevation 4945 and 2,600 feet south of the center of section 2, T. 5 S., R. 13 E. of the Copper River Meridian. This is locality 78 of MacKevett (1976); the location is accurate to within about 1,000 feet.

Geologic setting

Geologic description

This occurrence consists of a 6-inch-wide altered quartz(?) vein that cuts Tertiary granodiorite (MacKevett, 1976, 1978). A sample of the vein contained 1.5 parts per million (ppm) silver and 2,000 ppm copper.
Geologic map unit (-143.02927333816, 61.4571586003854)
Mineral deposit model Vein
Age of mineralization Tertiary based on the age of the granodiorite host rock.
Alteration of deposit Oxidation?

Production and reserves

Workings or exploration Limited surface sampling.
Indication of production None

Additional comments

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

References