|Quadrangle map, 1:250,000-scale||MC|
|Quadrangle map, 1:63,360-scale||A-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on a ridge crest east of the Chakina River. It is at an elevation of about 5,800 feet, about 1,000 feet southeast of peak 6015 and about 3,000 feet northwest of peak 6165. The site is in the NW1/4 of section 19, T. 9 S., R. 14 E. of the Copper River Meridian. This is locality 20 of MacKevett (1976); it is probably accurate to within about 500 feet.|
Geologic descriptionThis occurrence consists of serpentinized ultramafic rocks with minor chromite and disseminated sulfide minerals. A sample contained 10 percent magnesium, 150 parts per million (ppm) cobalt, 3,000 ppm copper, and 2,000 ppm nickel (MacKevett, 1976). The host alpine-type ultramafic body which is about 1.5 mile long and 0.2 mile wide is within upper Paleozoic metamorphic rocks (MacKevett, 1978).
|Geologic map unit||(-142.999336407346, 61.0777456464749)|
|Mineral deposit model||Podiform chromite (Cox and Singer, 1986; model 8a)|
|Mineral deposit model number||8a|
|Alteration of deposit||Sepentinization.|
|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|