|Quadrangle map, 1:250,000-scale||ID|
|Quadrangle map, 1:63,360-scale||C-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is about 1.7 mile north-northeast of Camelback Mountain on a broad summit of a northeast-trending ridge The occurrence is at an elevation of about 2,100 feet, about 0.5 mile north-northwest of the center of section 34, T. 29 N., R. 43 W., of the Seward Meridian. The location is accurate.|
Geologic descriptionThis prospect consists of a zone of quartz-sulfide veins with gradational boundaries in hornfels. The occurrence is adjacent to a small monzonite body that intrudes both the Upper Cretaceous, Kuskokwim Group and andesitic flows of the Iditarod volcanics (Bundtzen, Laird, and Lockwood, 1988; Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The size of the deposit is unknown. One grab sample of chips from a quartz-sulfide vein contained 12.0 parts per million (ppm) silver, 15.00 percent iron, 710 ppm arsenic, 600 ppm zinc, 500 ppm lead, 70 ppm antimony, 4,200 parts per billion (ppb) mercury, 35 ppm cadmium, and 300 ppm nickel (McGimsey and others, 1988).
|Geologic map unit||(-157.328927727301, 62.5661072050048)|
|Mineral deposit model||Polymetallic vein (Cox and Singer, 1986; model 22c).|
|Mineral deposit model number||22c|
|Age of mineralization||Unknown; the Camelback Mountain intrusion about a mile to the south is 73.2 Ma (Bundtzen, Laird, and Lockwood, 1988).|
|Alteration of deposit||Silicification.|
|Workings or exploration||The area was sampled by the U.S. Geological Survey in the 1980s (McGimsey and others, 1988).|
|Indication of production||None|
Bundtzen, T.K., and Miller, M.L., 1997, Precious metals associated with Late Cretaceous-early Tertiary igneous rocks of southwestern Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska: Economic Geology Monograph 9, p. 242-286.
Bundtzen, T.K., Laird, G.M., and Lockwood, M.S., 1988, Geologic map of the Iditarod C-3 quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Professional Report 96, 13 p., 1 sheet, scale 1:63,360.
McGimsey, R.G., Miller, M.L., and Arbogast, B.F., 1988, Paper version of analytical results, and sample locality map for rock samples from the Iditarod quadrangle, Alaska: U.S. Geological Survey Open-File Report 88-421-A, 110 p., 1 sheet, scale 1:250,000.
Miller, M.L., and Bundtzen, T.K., 1994, Generalized geologic map of the Iditarod quadrangle, Alaska showing potassium-argon, major oxide, trace element, fossil, paleocurrent, and archeological sample localities: U.S. Geological Survey Miscellaneous Field Studies Map MF-2219-A, 48 pages; 1 sheet, scale 1:250,000.
|Reporters||T.K. Bundtzen (Pacific Rim Geological Consulting, Inc.), M.L. Miller (U.S. Geological Survey); and C.C. Hawley (Hawley Resource Group)|
|Last report date||5/19/2003|