|Quadrangle map, 1:250,000-scale||TK|
|Quadrangle map, 1:63,360-scale||A-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Placer claims on White Sand Creek, a west tributary of Tyone Creek, extend from an elevation of about 3,250 to about 3,700 feet. The site is plotted at about the center of these claims. The location is accurate to within one mile.|
Geologic descriptionThe rocks in the drainage of upper White Sand Creek are cobble and boulder conglomerate, siltstone, and shale of the Naknek Formation (Csejtey and others, 1978). Cretaceous sandstone, siltstone, and shale, and Tertiary fluviatile conglomerate occur on the ridges nearby. The lower part of the creek cuts Quaternary glacial deposits. Prominent white cliffs here are composed of loess. The average creek gradient is 150 feet per mile. Gold occurs in alluvial gravel deposits of unknown thickness. Eight claims were staked in 1978; 4 claims were staked in 1980 (Kurtak and others, 1992). Placer samples collected by the U.S. Bureau of Mines contain up to 0.0008 ounce of gold per cubic yard (Kurtak and others, 1992). The gold is 839 fine.
|Geologic map unit||(-147.269811591057, 62.1996985556966)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary placer.|
|Workings or exploration||Eight claims were staked in 1978; 4 claims were staked in 1980 (Kurtak and others, 1992). Stream samples were collected by the U.S. Bureau of Mines (Kurtak and others, 1992).|
|Indication of production||None|
Additional commentsMAS/MILS number 20760104.
Csejtey, Bela, Jr., Nelson, W.H., Jones, D.L., Silberling, N.J., Dean, R.M., Morris, M.S., Lanphere, M.A., Smith, J.G., and Silberman, M.L, 1978, Reconnaissance geologic map and geochronology, Talkeetna Mountains quadrangle, northern part of Anchorage quadrangle, and southwest part of Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-558-A, 60 p., 1 sheet, scale 1:250,000.
|Reporters||R.K. Rogers (U. S. Geological Survey contractor)|
|Last report date||10/3/2002|