|Quadrangle map, 1:250,000-scale||MC|
|Quadrangle map, 1:63,360-scale||A-2|
|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 descriptionThis 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.|
|Workings or exploration||Limited surface sampling.|
|Indication of production||None|
Additional commentsThe locality is in the Wrangell-Saint Elias National Park and Preserve.
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.
|Reporters||Travis L. Hudson (Applied Geology, Inc.)|
|Last report date||1/12/2003|