|Quadrangle map, 1:250,000-scale||NB|
|Quadrangle map, 1:63,360-scale||B-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is north of upper Antler Creek; it is at an elevation of about 6,700 feet, about 500 feet south-southwest of peak 7144. The site is in the SE1/4 of section 32, T. 8 N., R. 17 E. of the Copper River Meridian. This is locality 36 of Richter and others (1975). It is located to within about 100 feet.|
Geologic descriptionThis occurrence consists of quartz veinlets with minor chalcopyrite, pyrite, and bornite; the veinlets cut hornblende syenodiorite of the Antler Creek pluton (Richter, 1975; Richter and others, 1975). The Antler Creek pluton is part of a mid-Cretaceous intrusive suite associated with copper skarn and porphyry deposits elsewhere in the Nabesna quadrangle (e.g.. NB022 and NB043). A K/Ar date on hornblendite in the border zone of the Antler Creek pluton is 105 +/- 2.8 Ma (Richter, 1975; Richter, Lanphere, and Matson, 1975).
|Geologic map unit||(-142.315938730801, 62.4238521899028)|
|Mineral deposit model||Copper-bearing vein|
|Age of mineralization||Mid-Cretaceous. A K/Ar date for the Antler Creek pluton is 105 +/- 2.8 Ma (Richter, Lanphere, and Matson, 1975).|
|Alteration of deposit||Oxidation? Richter (1975) reports that copper staining is commonly present at mineralized occurrences in this area.|
|Workings or exploration||Probably only surface examination.|
|Indication of production||None|
Additional commentsThe occurrence is in the Wrangell-St. Elias National Preserve.
Richter, D.H., 1975, Reconnaissance geologic map of the Nabesna B-3 quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-904, 1 sheet, scale 1:63,360.
Richter, D.H., Lanphere, M.A., and Matson, N.A., Jr., 1975, Granite plutonism and metamorphism, eeastern Alaska Range, Alaska: Geological Society of American Bulletin, v. 86, p. 819-820.
|Reporters||Travis L. Hudson (Applied Geology)|
|Last report date||11/24/2002|