Unnamed (northwest of lower Barnard Glacier)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Fe
Other commodities Cu
Ore minerals magnetite

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale A-2
Latitude 61.1434
Longitude -141.7273
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is on the east-facing slopes along the north side of lower Barnard Glacier. It is at an elevation of about 5,000 feet, about 2,500 feet from the glacier and 5,500 feet south of peak 6840. The occurrence is in the NW1/4 of section 36, T. 8 S., R. 20 E. of the Copper River Meridian. This is locality 28 of MacKevett (1976); the location is accurate to within about 1,000 feet.

Geologic setting

Geologic description

This occurrence consists of a magnetite-rich skarn that is developed near a small monzonite intrusion. A sample of the skarn contained 200 parts per million copper and more than 20 percent iron (MacKevett, 1976). The skarn is developed in upper Paleozoic metamorphic rocks (MacKevett, 1978).
Geologic map unit (-141.729305551017, 61.1429852148399)
Mineral deposit model Iron skarn
Age of mineralization Late Paleozoic or younger based on the age of the host rocks.
Alteration of deposit Calc-silicate replacement.

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