|Quadrangle map, 1:250,000-scale||NB|
|Quadrangle map, 1:63,360-scale||A-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is in the headwater cirque to an unnamed south tributary to Klein Creek. It is at an elevation of about 6,900 feet, about 1,500 feet southeast of peak 7730. The site is in the SW1/4 of section 26, T. 4 N., R. 21 E. of the Copper River Meridian. This is National Park Service locality WRST-73 (unpublished data) and the coordinates for this record were provided by the National Park Service.|
Geologic descriptionAn unpublished National Park Service map and accompanying database identify this locality as a copper, silver, gold, and lead prospect where 6 lode claims were active from 1972 to 1981. The prospect is near the northwest contact of the Klein Creek pluton with Jurassic or Cretaceous siliciclastic rocks (Richter and Jones, 1973). The Klein Creek pluton varies from gabbro to granodiorite and has concordant biotite/hornblende K/Ar ages of 111 +/- 3.6 Ma (Richter, Lanphere, and Matson, 1975).
|Geologic map unit||(-141.517637214292, 62.0878626381967)|
|Age of mineralization||Mid-Cretaceous? The deposit is probably related to emplacement of the Klein Creek pluton which has concordant biotite/hornblende K/Ar ages of 111 +/- 3.6 Ma (Richter, Lanphere, and Matson, 1975).|
|Workings or exploration||Six lode claims were active in this area from 1972 to 1981 and at least some surface prospecting has taken place.|
|Indication of production||None|
Additional commentsThe prospect is in the Wrangell-St. Elias National Preserve.
Richter, D.H., and Jones, D.L., 1973, Reconnaissance geologic map of the Nabesna A-2 quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series Map I-749, 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|