|Quadrangle map, 1:250,000-scale||ID|
|Quadrangle map, 1:63,360-scale||D-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on a steep north-facing slope about 500 feet east of hill 3670 in the north-central Beaver Mountains, The occurrence is at an elevation of about 3,000 feet in the SE1/4 SE1/4 section 30, T. 33 N., R. 40 W., of the Seward Meridian. The location is approximate.|
Geologic descriptionThis occurrence consists of a 10-foot-zone of vein-type mineralization in a cupola of the Upper Cretaceous, Beaver Mountains stock (Szumigala, 1993; Bundtzen and Laird, 1982). The zone contains veinlets of tourmaline, quartz, and minor chalcopyrite. No size or orientation information is available. One chip sample contained 43 parts per billion (ppb) gold, 60.0 parts per million (ppm) silver, 1.03 percent copper, 108 ppm lead, 247 ppm zinc, and 94.5 ppm arsenic (Szumigala, 1993).
|Geologic map unit||(-156.926237789341, 62.9140680253698)|
|Mineral deposit model||Polymetallic vein (Cox and Singer, 1986; model 22c).|
|Mineral deposit model number||22c|
|Age of mineralization||May be related to the Beaver Mountains pluton which has been dated at 70.1 Ma. (Bundtzen and Laird, 1982).|
|Alteration of deposit||None noted.|
|Workings or exploration||Surface sampling was conducted by Battle Mountain Mining Company in 1990. Samples were collected and analyzed by the Alaska Division of Geological and Geophysical Surveys in 1992 (Szumigala, 1993).|
|Indication of production||None|
Bundtzen, T.K., and Laird, G.M., 1982, Geologic map of the Iditarod D-2 and eastern D-3 quadrangles, Alaska: Alaska Division of Geological and Geophysical Surveys Geologic Report 72, 1 sheet, scale 1:63,360.
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.
Szumigala, D.J., 1993, Gold mineralization related to Cretaceous-Tertiary magmatism in the Kuskokwim Mountains of west-central and southwestern Alaska: Los Angeles, University of California Ph.D. dissertation, 300 p.
|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||5/12/2003|