|Quadrangle map, 1:250,000-scale||JU|
|Quadrangle map, 1:63,360-scale||C-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is near the northern tip of Lincoln Island at an elevation of about 300 feet. It is in the SW1/4 section 4, T. 39 S., R. 63 E. of the Copper River Meridian. The location is accurate within 1/4 mile.|
Geologic descriptionThe country rocks are a sequence of chert, tuff, argillite and mafic volcanic rocks, presumably of Late Jurassic or Cretaceous age (Gehrels and Berg, 1994). All of the rocks contain varying amounts of disseminated sulfides, chiefly pyrite or pyrrhotite. The U.S. Bureau of Mines conducted limited ground geophysics in 1986 and noted good conductivity related to the exposure. U.S. Bureau of Mines samples contained up to 1,900 ppm copper (Clough and Hayden, 1988). Wells and others (1986) noted claims at this site in 1956.
|Geologic map unit||(-135.02510226351, 58.5141696565459)|
|Workings or exploration||Surface sampling and limited geophysics.|
|Indication of production||None|
Clough, A.H., and Hayden, T.J., 1988, 1985-1986 mineral investigations in the southern Chilkat Range, southeast Alaska: U.S. Bureau of Mines Open-File Report 13-88, 25 p.
Gehrels, G.E., and Berg, H.C., 1994, Geology of southeastern Alaska, in Plafker, George, and Berg, H. C., eds., The geology of Alaska: Geological Society of America, DNAG, The geology of North America, Vol. G-1, p. 451-467.
|Reporters||J.C. Barnett and L.D. Miller (Juneau, Alaska )|
|Last report date||12/15/2001|