|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 occurrence is on an isolated knob, hill 1560, between the George River and Moore Creek. The occurrence is near the center of the NW 1/4, section 9, T. 2 8N., R. 42 W., of Seward Meridian. The location is accurate.|
Geologic descriptionThis occurrence is in a intensely altered zone with secondary biotite in a small hypabyssal intrusion of intermediate composition and with a pilotaxitic texture. The plug intrudes shale and sandstone strata of the Upper Cretaceous, Kuskokwim Group (Bundtzen and others, 1988; Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). One sample of altered rock with biotite contained 1,000 parts per billion silver (McGimsey and others, 1988).
|Geologic map unit||(-157.082582360652, 62.5336290619132)|
|Alteration of deposit||Strong zone of secondary biotite in intrusion.|
|Workings or exploration||Samples were collected by the U.S. Geological Survey in 1983 (McGimsey and others, 1988).|
|Indication of production||None|
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|