Unnamed (terminus of Ram Glacier)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Fe
Ore minerals hematite; pyrite

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale A-2
Latitude 61.0071
Longitude -141.4289
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is 1,500 feet southwest of the terminus of Ram Glacier. It is at an elevation of about 3,100 feet, near the center of the south boundary of section 12, T. 10 S., R. 22 E. of the Copper River Meridian. This is locality 1 of MacKevett (1976); the location is accurate to within about 500 feet.

Geologic setting

Geologic description

This occurrence consists of networks of specular hematite veins in altered Pennsylvanian quartz monzonite (MacKevett, 1976). The quartz monzonite locally contains disseminated pyrite. It is part of a large and varied intrusive complex ranging from gabbro to granite that has K/Ar dates of 295 +/- 8 Ma and 209 +/- 9 Ma (MacKevett, 1978).
Geologic map unit (-141.430875608348, 61.006684696814)
Mineral deposit model Network of hematite veins in quartz monzonite
Age of mineralization Pennsylvanian or younger. The veins cut a pluton that has yielded K/Ar dates of 295 +/- 8 Ma and 209 +/- 9 Ma (MacKevett, 1978).

Production and reserves

Workings or exploration Limited surface examination.
Indication of production None

Additional comments

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

References