|Quadrangle map, 1:250,000-scale||MC|
|Quadrangle map, 1:63,360-scale||B-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on the southwest flank of Joshua Green Peak. It is at an elevation of about 6,300 feet, 2,200 feet southwest of the peak in the NW1/4 of section 8, T. 6 S., R. 17 E. of the Copper River Meridian. This is locality 53 of MacKevett (1976); the location is accurate to within a few hundred feet.|
Geologic descriptionThis occurrence consists of an intensely iron-stained altered fault zone cuts Triassic Chitistone Limestone and siliciclastic rocks of the Triassic to Lower Jurassic(?) McCarthy Formation (MacKevett, 1970 [B 1333]; MacKevett and Smith, 1972; MacKevett, 1976). A sample from the altered zone contained 1,500 parts per million antimony (MacKevett and Smith, 1968).
|Geologic map unit||(-142.412349430308, 61.3673743897988)|
|Age of mineralization||Jurassic or younger based on the age of the host rocks.|
|Alteration of deposit||Oxidation; iron-staining marks the altered zone.|
|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., 1970, Geology of the McCarthy B-4 quadrangle: U.S. Geological Survey Bulletin 1333, 31 p.
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.
MacKevett, E.M., Jr., and Smith, J.G., 1968, Distribution of gold, copper, and some other metals in the McCarthy B-4 and B-5 quadrangles, Alaska: U.S. Geological Survey Circular 604, 25 p.
|Reporters||Travis L. Hudson (Applied Geology, Inc.)|
|Last report date||1/12/2003|