|Quadrangle map, 1:250,000-scale||ID|
|Quadrangle map, 1:63,360-scale||B-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is on an northwest-trending ridge about 5 miles east of the Little Waldren Fork of the Takotna River. The occurrence is at an elevation of about 1,600 feet, about 0.3 mile north of hill 1790. The occurrences is about 0.6 mile southwest of the center of section 32, T. 28 N., R. 40 W., of the Seward Meridian. The location is accurate.|
Geologic descriptionThis occurrence is a zone of iron-oxide-stained sandstone breccia that is locally healed by quartz (Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The mineralized zone is of uncertain size and orientation. A prospect pit explored a similar breccia zone about 0.6 mile east of this occurrence; however, we did not sample it. One grab sample of sandstone breccia contained 420 parts per billion (ppb) mercury, 20 parts per million (ppm) antimony, and 20 ppm arsenic (McGimsey and others, 1988).
|Geologic map unit||(-156.746506001229, 62.466986365526)|
|Mineral deposit model||Polymetallic vein? (Cox and Singer, 1986; model 22c).|
|Mineral deposit model number||22c?|
|Alteration of deposit||Iron oxide staining.|
|Workings or exploration||Samples were collected by the U.S. Geological Survey 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||5/19/2003|