|Quadrangle map, 1:250,000-scale||TK|
|Quadrangle map, 1:63,360-scale||D-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is at an elevation of about 5,000 feet, 0.5 mile north-northeast of VABM Watana. It is near the center of the NE1/4 sec. 36, T. 22 S., R. 2 W., Fairbanks Meridian. The location is accurate to within 1/2 mile.|
Geologic descriptionThis occurrence consists of bornite, covellite, and chalcopyrite in garnet-epidote-quartz skarn and hornfels (Kurtak and others, 1992). The skarn grades into marble that is part of a sequence of Triassic metabasalt, argillite, metachert, and marble (Csejtey and others, 1978). Selected samples of the mineralized skarn contain 3.5 parts per million silver, 0.2 parts per million gold, and up to 0.26 percent copper (Balen, 1990). As of January 1, 2000, a block of approximately 96 state mining claims covered this and adjacent prospects (Northern Associates Inc., written communication, 2001).
|Geologic map unit||(-147.832950955314, 62.9647449292332)|
|Mineral deposit model||Copper skarn (Cox and Singer, 1986; model 18b)|
|Mineral deposit model number||18b|
|Alteration of deposit||Silicification and development of garnet-epidote skarn.|
|Workings or exploration||Limited sampling by U.S. Bureau of Mines (Balen, 1990). As of January 1, 2000, a block of approximately 96 state mining claims covered this and adjacent prospects (Northern Associates Inc., written communication, 2001).|
|Indication of production||None|
Additional commentsMAS/MILS number 20760086.
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||10/2/2002|