|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 placer gold mine is in Nekula Gulch, a headwater tributary to Anvil Creek (NM236). The map location is at an elevation of about 425 feet on lower Nekula Gulch in the SW1/4 section 30, T. 10 S., R. 33 W., Kateel River Meridian. It is included in locality 102 of Cobb (1972 [MF 463], 1978 [OFR 78-93]). The mine is located to within about 500 feet.|
Nekula Gulch heads in an area of auriferous high-level gravels that were drift mined at many places (for example, NM246). The nearby Caribou Bill mine (NM238) was very rich, contained coarse and angular gold, and was at least partly mined by surface operations. At Nekula Gulch, the 3-foot-thick gravels were gold-bearing throughout, but the richest pay was on bedrock. The Nekula Gulch placer was probably mostly derived from reworking the older, high-level gravels (Brooks and others, 1901; Collier and others, 1908; Moffit, 1913).The Anvil Creek fault transects the area near Nekula Gulch. The Anvil Creek fault is a through-going, high-angle structure that juxtaposes pelitic and marble bedrock (Hummel, 1962 [MF 247]). Hummel mapped two strands of the Anvil Creek fault in this area; they are separated by graphitic strata. The bedrock is probably of early Paleozoic protolith age (Hummel, 1962 [MF 247]; Sainsbury, Hummel, and Hudson, 1972 [OFR 72-326]; Till and Dumoulin, 1994; Bundtzen and others, 1994). Hummel also mapped granitic sills in this area. Bundtzen and others (1994) propose that Nekula Gulch is largely underlain by felsic metavolcanic rocks.
|Geologic map unit||(-165.364708051672, 64.5889359597178)|
|Mineral deposit model||Alluvial placer Au (Cox and Singer, 1986; model 39a), at least partly formed by reworking high-level bench gravel.|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Surface placer workings, dating back to 1900, are present on Nekula Gulch.|
|Indication of production||Yes; small|
Additional commentsNekula Gulch is underlain mostly by felsic metavolcanic rocks that may be mineralized (also see Aurora Creek, NM147).
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.
Hummel, C.L., 1962, Preliminary geologic map of the Nome C-1 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-247, 1 sheet, scale 1:63,360.
Moffit, F.H., 1913, Geology of the Nome and Grand Central quadrangles, Alaska: U.S. Geological Survey Bulletin 533, 140 p.
Sainsbury, C.L., Hummel, C.L., and Hudson, Travis, 1972, Reconnaissance geologic map of the Nome quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 72-326, 28 p., 1 sheet, scale 1:250,000.
Till, A.B., and Dumoulin, J.A, 1994, Geology of Seward Peninsula and St. Lawrence Island, in Plafker, G., and Berg, H.C., eds., The Geology of Alaska: Geological Society of America, DNAG, The Geology of North America, v. G-1, p. 141-152.
|Reporters||C.C. Hawley and Travis L. Hudson|
|Last report date||7/10/2000|