|Quadrangle map, 1:250,000-scale||MC|
|Quadrangle map, 1:63,360-scale||C-8|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on the southwest flank of Granite Peak. It is at an elevation of about 6,200 feet, 1,400 feet south-southwest of Granite Peak, and 2,300 feet northeast of the center of section 36, T. 1 S., R. 8 E. of the Copper River Meridian. This is locality 178 of MacKevett (1976) and locality 3 of MacKevett and others (1978). The location is accurate to within about 100 feet.|
Geologic descriptionThis occurrence consists of numerous pyrite- and chalcopyrite-bearing quartz veinlets and sulfide disseminations in Jurassic granodiorite (MacKevett, 1976). Samples of the mineralization contain as much as 0.1 part per million (ppm) gold, 2 ppm silver, 5,000 ppm copper, 70 ppm molybdenum, more than 5,000 ppm barium, and 100 ppm antimony.
|Geologic map unit||(-143.868793835332, 61.7420403067154)|
|Mineral deposit model||Porphyry Cu (Cox and Singer, 1986; model 17)|
|Mineral deposit model number||17|
|Age of mineralization||Jurassic or younger based on the age of the granodiorite host rock.|
|Alteration of deposit||The type of alteration is not specified.|
|Workings or exploration||Only 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|