|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||Last Chance Creek is in the northeast corner of the Nome C-2 quadrangle and adjacent parts of the Nome C-1 quadrangle; it was placer mined for gold from the headwaters (NM142) downstream to near Hazel Gulch in the Nome C-1 quadrangle. The location used is the boundary of the C-1 and C-2 quadrangles, which is the approximate mid-point between the head of pay at the Last Chance lode (NM142) and Hazel Gulch, which is partly on U.S. Mineral Survey No. 1839. This is locality 89 of Cobb (1972 [MF 463], 1978 [OFR 78-93]) although he used a location farther downstream in the Nome C-1 quadrangle for the mine.|
Geologic descriptionPlacer gold was discovered in Last Chance Creek in or before 1900 and some sluicing was reported in 1900 (Brooks and others, 1901, p. 80). Reportedly the creek was prospected extensively in 1901, but probably with poor results because the prospect was abandoned (Collier and others, 1908, p. 197). Some mining was reported in 1903. Gold was reported as coarse and rough, as well as bright (Collier and others, 1908) and iron-stained (Moffit, 1913, p. 87). Moffit also reported that mining near Dewey Creek (not currently named) recovered gold from heavy concentrate that also contained scheelite, pyrite, hematite, and magnetite. Coats (1944) confirmed minor amounts of scheelite. Sainsbury and others (1972 [OFR 72-321]) showed placer mine workings to be present downstream from the headwaters almost to the edge of the Nome C-2 quadrangle. Mining, at least partly by mechanical methods, has taken place from at least one-half mile above Hazel Creek to the mouth of the creek on the north fork of Snake River in the Nome C-1 quadrangle. Sampling by Kennecott Exploration Company in 1990 found more than 4,000 ppb gold in a panned concentrate from the mouth of Waterfall Creek and more than 9,000 ppb gold from a point about one-half mile below Waterfall and about a mile above Hazel Gulch (C.C. Hawley, Cindy Buxton, and D.L. Olson, written communication, 1992). Bedrock along Last Chance Creek is mostly the chlorite-rich metaturbidite and marble unit of Bundtzen and others (1994).
|Geologic map unit||(-165.502916431685, 64.7232353572985)|
|Mineral deposit model||Alluvial placer Au (Cox and Singer, 1986; 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Hand and small-scale mechanical operations occurred on Last Chance Creek. Mining was reported in 1900, 1903, and as recently as 1924 (Smith, 1926). Some of the tailings below Hazel Gulch could have been processed by small-scale mechanical operations after 1924.|
|Indication of production||Yes; small|
|MRDS Number||A012887; D002578|
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.
Moffit, F.H., 1913, Geology of the Nome and Grand Central quadrangles, Alaska: U.S. Geological Survey Bulletin 533, 140 p.
Sainsbury, C.L., Hudson, T.L., Ewing, Rodney, and Marsh, W.R., 1972, Reconnaissance geologic map of the Nome C-2 quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Open-File Report 72-321, 13 p., 1 sheet, scale 1:63,360.
|Reporters||C.C. Hawley and Travis L. Hudson|
|Last report date||3/12/2000|