|Quadrangle map, 1:250,000-scale||MC|
|Quadrangle map, 1:63,360-scale||B-8|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is on the northwest flank of Nelson Mountain. It is at an elevation of about 4,500 feet, 3,500 feet northwest of elevation 5457 (Cho), and 4,800 feet southwest of elevation 3319 (O'Hara). The site is 1,500 feet west of the center of section 20, T. 6 S., R. 9 E. of the Copper River Meridian. This is locality 59 of MacKevett (1976); the location is accurate to within about 1,000 feet.|
Geologic descriptionThe deposit at this prospect consist of veins up to 8 inches thick that contain galena, sphalerite, pyrite, marcasite, and pyrrhotite. They cut Permian marble which locally also contains some disseminated tourmaline, pyrite, pyrrhotite, and sphalerite (Berg and Cobb, 1967, p. 64; MacKevett, 1976). The deposits were explored by 2 or 3 short adits driven about 1940.
|Geologic map unit||(-143.843571465664, 61.3333372336605)|
|Mineral deposit model||Vein and disseminated|
|Age of mineralization||Permian or younger based on the age of the host rock.|
|Workings or exploration||The deposits were explored by two or three short adits driven about 1940.|
|Indication of production||Undetermined|
Additional commentsThe locality is in the Wrangell-Saint Elias National Park and Preserve.
Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
|Reporters||Travis L. Hudson (Applied Geology, Inc.)|
|Last report date||1/12/2003|