|Quadrangle map, 1:250,000-scale||CA|
|Quadrangle map, 1:63,360-scale||A-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Placer ground located east of headwaters of Alameda Creek. The map site is in section 23, T. 5 S., R. 12 W., of the Kateel River Meridian. Cobb, 1972 (MF-386), location 46.|
Geologic descriptionThis gold placer prospect occurs in a short section of Alameda Creek. The deposit apparently is in a paleochannel uncut by the present stream. The deposit was explored by shafts, from which a small amount of gold was recovered. Pan concentrates contained a little gold, much magnetite and some undecomposed sulfides. Gravel on bedrock contained about $0.01 per pan (gold at $20.67/ounce) (Smith and Eakin, 1911).
|Geologic map unit||(-161.0525944867, 65.0293219883245)|
|Mineral deposit model||Placer Au-PGE (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||In the early 1900s one shaft was sunk 192 feet without reaching bedrock (Smith and Eakin, 1911). It was mainly in well-rounded quartz gravel. Another shaft hit lava at 32 feet. Gravel on bedrock contained about $0.01 per pan (gold at $20.67/ounce).|
|Indication of production||None|
|Production notes||Gold was too scarce to support mining operations in 1909.|
Additional commentsStream gradient approximately 50 feet per mile.
Cobb, E.H., 1972, Metallic mineral resources map of the Candle Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-389, 1 sheet, scale 1:250,000.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p.
Koschmann, A.H., and Bergendahl, M.H., 1968, Principal gold producing districts of the United States: U.S. Geological Survey Professional Paper 610, 283 p.
Smith, P.S., and Eakin, H.M., 1910, Mineral resources of the Nulato-Council region: U.S. Geological Survey Bulletin 442-H, p. 316-352.
|Reporters||Anita Williams (Anchorage, AK)|
|Last report date||1/12/2000|