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Unnamed (east 0f north tributary to Barnard Glacier)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Sn
Other commodities Mn

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale A-2
Latitude 61.2437
Longitude -141.6627
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is east of an unnamed north tributary to Barnard Glacier. It is at an elevation of about 5,000 feet, 7,500 feet northwest of peak 8918. The site is in the SW1/4 of section 21, T. 7 S., R. 21 E. of the Copper River Meridian. This is locality 34 of MacKevett (1976); the location is accurate to within about 1,000 feet.

Geologic setting

Geologic description

This occurrence consists of a altered dike rock. A sample contained 3,000 parts per million (ppm) manganese and 100 ppm tin (MacKevett, 1976). The dike intrudes Paleozoic metamorphic rocks (MacKevett, 1978).
Geologic map unit (-141.66471630153, 61.2432949269239)
Mineral deposit model Disseminated sulfide minerals?
Age of mineralization The altered dike intrudes Paleozoic metamorphic rocks.

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

References

MacKevett, E.M., Jr., 1976, Mineral deposits and occurrences in the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-773-B, 2 sheets, scale 1:250,000.
MacKevett, E.M., Jr., 1978, Geologic map of the McCarthy quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-1032, 1 sheet, scale l:250,000.
Reporters Travis L. Hudson (Applied Geology, Inc.)
Last report date 1/12/2003