|Quadrangle map, 1:250,000-scale||RB|
|Quadrangle map, 1:63,360-scale||A-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Tenderfoot Creek is a west-flowing tributary of Poorman Creek. The site coordinates given are upstream on the Little Pup Gulch from location 30 of Cobb (1972 [MF405]). The coordinates fall in the NE1/4 section 20, T. 16 S., R. 17 E., Kateel River Meridian. The location is accurate to within a quarter mile.|
Geologic descriptionThe bedrock near the mouth of Tenderfoot Creek is phyllite (Eberlein and others, 1977). Placer ground was discovered along the creek in 1913 (Brooks, 1914). Mining occurred about 1/2 mile above the mouth. The gold was found in a gravel layer 3 to 6 feet thick overlying bedrock and buried by 53 to 65 feet of muck (Eakin, 1914 [B592-J]). Most of the gold is fine, shotty, and water worn (Eakin, 1914 [B592-J]; Eberlein and others, 1977). The gravels of Tenderfoot Creek are difficult to distinguish from the right-limit gravels of Poorman Creek (Eberlein and others, 1977). Mining along Tenderfoot Creek may be in gravels of Poorman Creek that are cut by Tenderfoot Creek (Eberlein and others, 1977). Mining occurred intermittently into the 1930s (Smith, 1939 [B917-A]).
|Geologic map unit||(-155.534699291202, 64.1048665747775)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Tenderfoot Creek experienced mining from 1913 to at least the 1930s (Eberlein and others, 1977).|
|Indication of production||Yes; small|
Additional commentsTenderfoot Creek has a similar setting to deposits on Poorman Creek (RB048), Duncan Creek (RB056) and Little Pup (RB054).
Brooks, A.H., 1914, Mineral resources of Alaska; report on progress of investigations in 1913: U.S. Geological Survey Bulletin 592, 413 p.
Cobb, E.H., 1972, Metallic mineral resources map of the Ruby quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-405, 1 sheet, scale 1:250,000.
Cobb, E.H., and Chapman, R.M., 1981, Mineral occurrences (other than mineral fuels and construction materials) in the Kantishna River and Ruby quadrangles, Alaska: U.S. Geological Survey Open-File Report 81-170, 94 p.
Eakin, H.M., 1914, Placer mining in the Ruby district: U.S. Geological Survey Bulletin 592-J, p. 363-369.
Eberlein, G.D., Chapman, R.M., Foster, H.L., and Gassaway, J.S., 1977, Map and table describing known metalliferous and selected nonmetalliferous mineral deposits in central Alaska: U.S. Geological Survey Open-File Report 77-168-D, 132 p., 1 sheet, scale 1:1,000,000.
|Reporters||C.E. Cameron (Alaska Division of Geological and Geophysical Surveys)|
|Last report date||3/22/2000|