|Quadrangle map, 1:250,000-scale||SM|
|Quadrangle map, 1:63,360-scale||B-7|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is near the top of peak 3162 near the center of the Buckstock Mountains. The occurrence is about 0.2 mile east-southeast of the center of section 17, T. 14 N., R. 51 W., of the Seward Meridian. The location is accurate.|
Geologic descriptionThis occurrence consists of pyrite-rich hornfels derived from the Upper Cretaceous, Kuskokwim Group or Mesozoic Gemuk Group (Cady and others, 1955; M.L. Miller, unpublished field data,1999). The protolith of the fractured hornfels is a medium grained sandstone. The rocks strike N45E and dip 42SE. One grab sample contained up to 21 parts per billion (ppb) gold, 1,750 parts per million (ppm) zinc, 24 ppm molybdenum, and 4.87 ppm cadmium (M.L. Miller, unpublished analytical data, 1999).
|Geologic map unit||(-158.460135696231, 61.3016067352364)|
|Mineral deposit model||Polymetallic replacement deposit? (Cox and Singer, 1986; model 19a).|
|Mineral deposit model number||19a?|
|Age of mineralization||Unknown. Miller and others (2002) report a U-Pb age of 59.2 Ma from the nearby Buckstock pluton.|
|Alteration of deposit||Sulfides have altered to iron oxides.|
|Workings or exploration||The U.S. Geological Survey investigated the site in 1999.|
|Indication of production||None|
Cady, W.M., Wallace, R.E., Hoare, J.M., and Webber, E.J., 1955, The central Kuskokwim region, Alaska: U.S. Geological Survey Professional Paper 268, 132 p.
Miller, M.L., Bradley, D.C., Bundtzen, T.K., and McClelland, William, 2002, Late Cretaceous through Cenozoic strike-slip tectonics of southwestern Alaska: Journal of Geology, vol.110, p. 247-270.
|Reporters||T.K. Bundtzen (Pacific Rim Geological Consulting, Inc.) and M.L. Miller (U.S. Geological Survey)|
|Last report date||5/10/2003|