|Quadrangle map, 1:250,000-scale||NM|
|Quadrangle map, 1:63,360-scale||C-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Mountain Creek is a north tributary of upper Oregon Creek (see NM146) in the northern part of section 22, T. 9 S., R. 35 W., Kateel River Meridian. The mouth of Oregon Creek is where the Nome-Teller road crosses Cripple River. Mountain Creek was apparently called Greenstone Creek by Herreid (1970); the name Mountain Creek is not used on current U.S. Geological Survey maps. This is locality 70 of Cobb (1972 [MF 463], 1978 [OFR 78-93]) and it is accurate to within about 500 feet.|
A placer gold deposit was discovered before 1904 in Mountain Creek; rich values were reported in schist-bearing gravel (Collier and others, 1908), and some mining was done in the lower part of the creek. Kennecott Exploration Company found about 5,000 ppb gold in a pan concentrate collected at the confluence of Mountain and Oregon Creeks. A negligible amount of scheelite has also been reported from the creek (Coats, 1944). Mountain Creek contains boulders of quartz as much as 3 feet across containing 1 to 2 percent stibnite for at least 1,000 feet upstream from its mouth.The lower part of Mountain Creek is in a chloritic schist; a massive metabasite body crops out a few hundred feet west of the mouth of the creek (Bundtzen and others, 1994). The east boundary of the metabasite unit probably is a northeast-trending high-angle fault, called the Aurora fault by Bundtzen and others (1994). Above an elevation of about 650 feet in the creek, one or both sides of the creek are in marble.
|Geologic map unit||(-165.654424597529, 64.6939348363662)|
|Mineral deposit model||Alluvial placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Gold was discovered in this creek before 1901 (Brooks and others, 1901). Collier and others (1908, p. 214) reported plans to mine one claim in auriferous schist-bearing gravel in 1904.|
|Indication of production||Yes; small|
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.
Coats, R.R., 1944, Lode scheelite occurrences of the Nome area: U.S. Geological Survey Open-File Report 17, 6 p.
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||3/12/2000|