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  3. Alaska Resource Data File (ARDF)

Unnamed (east fork of Strelna Creek)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Cu
Other commodities Ag; B; Mo

Geographic location

Quadrangle map, 1:250,000-scale MC
Quadrangle map, 1:63,360-scale C-8
Latitude 61.5921
Longitude -143.9367
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 3,200 feet on the south valley wall of the east fork of Strelna Creek. It is about 800 feet south of the center of section 22, T. 3 S., R. 8 E. of the Copper River Meridian. This is locality 143 of MacKevett (1976) and locality 27 of MacKevett and others (1978).

Geologic setting

Geologic description

This occurrence consists of an iron-stained altered zone about 3 feet wide that cuts Permian argillite (MacKevett, 1976). A sample of the altered rock contained 1 part per million (ppm) silver, 150 ppm boron, 1,500 ppm copper, and 5 ppm molybdenum.
Geologic map unit (-143.938788876666, 61.5916350077687)
Age of mineralization Permian or younger based on the age of the host rock.
Alteration of deposit Oxidation.

Production and reserves

Workings or exploration Only 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., Smith, J.G., Jones, D.L., and Winkler, G.R., 1978, Geologic map of the McCarthy C-8 quadrangle, Alaska: U.S. Geological Survey Geologic Quadrangle Map GQ-1418, 1 sheet, scale 1:63,360.
Reporters Travis L. Hudson (Applied Geology, Inc.)
Last report date 1/12/2003