Unnamed (southwest flank of Joshua Green Peak)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Sb
Ore minerals stibnite

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale B-4
Latitude 61.3678
Longitude -142.4103
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on the southwest flank of Joshua Green Peak. It is at an elevation of about 6,300 feet, 2,200 feet southwest of the peak in the NW1/4 of section 8, T. 6 S., R. 17 E. of the Copper River Meridian. This is locality 53 of MacKevett (1976); the location is accurate to within a few hundred feet.

Geologic setting

Geologic description

This occurrence consists of an intensely iron-stained altered fault zone cuts Triassic Chitistone Limestone and siliciclastic rocks of the Triassic to Lower Jurassic(?) McCarthy Formation (MacKevett, 1970 [B 1333]; MacKevett and Smith, 1972; MacKevett, 1976). A sample from the altered zone contained 1,500 parts per million antimony (MacKevett and Smith, 1968).
Geologic map unit (-142.412349430308, 61.3673743897988)
Age of mineralization Jurassic or younger based on the age of the host rocks.
Alteration of deposit Oxidation; iron-staining marks the altered zone.

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.