|Quadrangle map, 1:250,000-scale||NM|
|Quadrangle map, 1:63,360-scale||C-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This alluvial gold placer mine is on Dewey Creek, an east tributary to Nome River. The map location is at an elevation of about 150 feet, in the southwest corner of section 10, T. 10 S., R. 33 W., Kateel River Meridian. It is locality 114 of Cobb (1972 [MF 463], 1978 [OFR 78-93]).|
Geologic descriptionGold was discovered on Dewey Creek by 1900; it was in 3 feet of auriferous gravel on a sandy clay layer overlain by 1 foot of sandy blue clay and 1 foot of muck. The gold is accompanied by considerable scheelite and garnet and some magnetite (Brooks and others, 1901). Some mining apparently took place in 1903 (Collier and others, 1908). Dewey Creek is near the northeast extension of the Anvil fault; this fault juxtaposes massive marble against marble and schist in this area. These rocks may in part correlate with the Casadepaga Schist (Hummel, 1962 [MF 247]; Bundtzen and others, 1994). Locally, the Anvil Creek fault is a mineralized structure (for example, NM234) containing stibnite and possibly gold.
|Geologic map unit||(-165.267312022891, 64.6301391099787)|
|Mineral deposit model||Alluvial placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Some small-scale surface placer workings are probably present.|
|Indication of production||Yes; small|
|MRDS Number||A012921; D002595|
Brooks, A.H., Richardson, G.B., Collier, A.J., and W.C. Mendenhall, 1901, A reconnaissance in the Cape Nome and adjacent gold fields of Seward Peninsula, Alaska, in 1900: U.S. Geological Survey Special Publication, p. 1-185, maps.
Bundtzen, T.K., Reger, R.D., Laird, G.M., Pinney, D.S., Clautice, K.H., Liss, S.A., and Cruse, G.R., 1994, Progress report on the geology and mineral resources of the Nome mining district: Alaska Division of Geological and Geophysical Surveys, Public Data-File 94-39, 21 p., 2 sheets, scale 1:63,360.
Cobb, E.H., 1972, Metallic mineral resources map of the Nome quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-463, 2 sheets, scale 1:250,000.
Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Nome quadrangle, Alaska: U.S. Geological Survey Open-File report 78-93, 213 p.
Collier, A.J., Hess, F.L., Smith, P.S., and Brooks, A.H., 1908, The gold placers of parts of Seward Peninsula, Alaska, including the Nome, Council, Kougarok, Port Clarence, and Goodhope precincts: U.S. Geological Survey Bulletin 328, 343 p.
|Reporters||C.C. Hawley and Travis L. Hudson|
|Last report date||7/10/2000|