|Quadrangle map, 1:250,000-scale||TK|
|Quadrangle map, 1:63,360-scale||B-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This placer occurrence is on a west tributary of Kosina Creek, at an elevation of about 3,650 feet,. It is near the center of sec. 16, T. 27 N., R. 7 E., Seward Meridian. The location is accurate to within 1/2 mile.|
Geologic descriptionThe stream drains an area underlain by plutonic and metamorphic rocks, including banded gneiss (Kurtak and others, 1992). Placer samples collected by the U.S. Bureau of Mines contained up to 24 parts per billion palladium and 100 parts per million arsenic (Balen, 1990). A sample of intrusive rock contains 813 parts per million copper.
|Geologic map unit||(-148.172808342533, 62.4262224393308)|
|Mineral deposit model||Placer PGE (Cox and Singer, 1986; model 39b)|
|Mineral deposit model number||39b|
|Age of mineralization||Quaternary placer.|
|Workings or exploration||Placer samples collected by the U.S. Bureau of Mines (Balen, 1990).|
|Indication of production||None|
Additional commentsMAS/MILS number 20760082.
Balen, M.D., 1990, Geochemical sampling results from Bureau of Mines investigations in the Valdez Creek mining district, Alaska: U.S. Bureau of Mines Open-File Report 34-90, 218 p., 2 sheets, scale 1:63,360.
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|