|Quadrangle map, 1:250,000-scale||BC|
|Quadrangle map, 1:63,360-scale||B-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Copper King prospect is 1.5 mile southeast of Berg Mountain at an elevation of about 1,300 feet about 0.6 mile northeast of the center of section 3, T 63 S., R, 80 E., of the Copper River Meridian. The location is accurate.|
The country rocks in the general area of the Copper King prospect are Mesozoic or Paleozoic pelitic schist and paragneiss and subordinate amphibolite and marble (Koch, 1996, 1997). As mapped by George and Wyckoff (1973), the rocks have been metamorphosed to upper greenschist of lower amphibolite facies quartz-mica schists and hornblende-biotite-pyroxene-feldspar gneiss; rhyolite sills parallel the foliation.The Copper King prospect was staked in 1906 and restaked in 1951 (Chapin, 1916; Chapin, 1918, Berg and Cobb, 1967). Williams (1957) described the deposit as a 4.5-foot-thick quartz vein with sulfides that is exposed for about 45 feet along a small creek and in a 9-foot-deep shaft. A sample from the dump of the shaft contained 3.3 percent zinc and a trace of copper. Still and others (2002) located a quartz vein in place that contains sphalerite, chalcopyrite, and pyrite. A 0.7-foot sample across the vein contained 18.9 parts per million (ppm) silver, 5,639 ppm copper, and 2.1 percent zinc. A sample from the dump of the shaft contained 12 ppm silver, 4,694 ppm copper, and 1.9 percent zinc. They also located a quartz vein about 750 feet northwest of the shaft along a small creek. A 1.6-foot sample contained 679 parts per billion gold.
|Geologic map unit||(-131.966083658211, 56.4400644460953)|
|Mineral deposit model||Quartz vein with sulfides.|
|Workings or exploration||The Copper King prospect was staked in 1906 and restaked in 1951 (Chapin, 1916; Chapin, 1918, Berg and Cobb, 1967). Williams (1957) described the deposit as a 4.5-foot-thick quartz vein with sulfides that is exposed for about 45 feet along a small creek and in a 9-foot-deep shaft. Examined by Still and others (2002) as part of a regional mineral assessment by the Bureau of Land Management.|
|Indication of production||None|
Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
Chapin, Theodore, 1918, Mining developments in the Ketchikan and Wrangell mining districts: U.S. Geological Survey Bulletin 662-B, p. 63-75.
Still, J.C., Bittenbender, P.E., Bean, K.W., and Gensler, E.G., 2002, Mineral assessment of the Stikine area, central southeast Alaska: Bureau of Land Management Technical Report 51, 560 p.
|Reporters||H. C. Berg (Fullerton, California); D.J. Grybeck (Port Ludlow, WA)|
|Last report date||3/4/2008|