|Quadrangle map, 1:250,000-scale||ID|
|Quadrangle map, 1:63,360-scale||A-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on a low saddle west of the head of Little Eldorado Creek at an elevation of about 1,050 feet. It is about 0.7 mile north-northwest of hill 1533 and about 0.3 mile north-northwest of the center of section 18, T. 24 N., R. 47 W., of the Seward Meridian. The location is accurate.|
Geologic descriptionThis occurrence is a zone of sericitized granite porphyry that contains quartz veinlets with envelopes of iron-stained alteration. The small granite porphyry body cuts sandstone of the Upper Cretaceous, Kuskokwim Group (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). A grab sample of mineralization contained 240 parts per million (ppm) zinc and 1,800 parts per billion (ppb) mercury (McGimsey and others, 1988).
|Geologic map unit||(-157.971917354679, 62.172580688139)|
|Mineral deposit model||Polymetallic vein (Cox and Singer, 1986; model 22c).|
|Mineral deposit model number||22c|
|Alteration of deposit||Sericitic alteration of granite porphyry; veinlets have envelopes of iron oxide alteration.|
|Workings or exploration||Samples were collected by the U.S. Geological Survey and Alaska Division of Geological and Geophysical Surveys in 1986 (McGimsey and others, 1988).|
|Indication of production||None|
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||5/25/2003|