|Quadrangle map, 1:250,000-scale||EA|
|Quadrangle map, 1:63,360-scale||A-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Robinson Creek is a small south tributary of Jack Wade Creek. Placer workings are located near the mouth of the creek, in section 2, T. 27 N., R. 20 E., of the Copper River Meridian. The location is accurate within one-half mile. This site is locality 101 of Burleigh and Lear (1994).|
Geologic descriptionThe rocks in the vicinty of Robinson Creek are Paleozoic amphibolite-facies biotite gneiss and amphibolite and lesser Mesozoic to Tertiary undifferentiated granitic rocks (Foster, 1976). Quaternary colluvial deposits are present along the entire length of the valley. Placer workings are present near the mouth of the creek (Burleigh and Lear, 1994). Robinson Creek was mined for placer gold in 1990 (Swainbank and others, 1991).
|Geologic map unit||(-141.442984718358, 64.1556831198901)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Robinson Creek was mined for placer gold in 1990 (Swainbank and others, 1991).|
|Indication of production||Undetermined|
Burleigh, R.E., and Lear, K.G., 1994, Compilation of data for Phase I of the mineral resource evaluation of the Bureau of Land Management Black River and Fortymile subunits: U.S. Bureau of Mines Open-File Report 48-94, 116 p.
Foster, H.L., 1976, Geologic map of the Eagle quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Series, Map 922, 1 sheet, scale 1:250,000.
|Last report date||5/1/2002|