|Quadrangle map, 1:250,000-scale||MK|
|Quadrangle map, 1:63,360-scale||A-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is at the head of Windy Creek on the western flank of the Buttress Range. It is at an elevation of about 1,750 feet in the NW1/4 sec. 27, T. 22 S., R. 37 W., of the Seward Meridian. The location is accurate within one-quarter mile.|
Geologic descriptionChurch, Riehle, and Goldfarb (1993) collected rocks here that contain 150 parts per million (ppm) or more copper, 200 ppm or more lead, and 1,500 ppm or more zinc. The samples were collected in talus below a large breccia body exposed in a cliff wall. The breccia body contains clasts of Upper Jurassic Naknek (?) Formation sedimentary rock in a matrix of pyrite. They estimated that the breccia crops out over an area at 33 by 100 feet. in size.
|Geologic map unit||(-155.321659432961, 58.2391995625643)|
|Mineral deposit model||Polymetallic vein (Cox and Singer, 1986; model 22c).|
|Mineral deposit model number||22c|
|Age of mineralization||Late Jurassic (?) or younger; the breccia body contains clasts that are probably from the Naknek Formation.|
|Workings or exploration||Apparently only geochemical sampling by government geologists (Church, Riehle, and Goldfarb, 1993).|
|Indication of production||None|
Additional commentsThis occurrence is in Katmai National Monument.
Church, S.E., Riehle, J.R., and Goldfarb, R.J., 1993, Interpretation of exploration geochemical data for the Mount Katmai quadrangle, and adjacent parts of the Afognak and Naknek quadrangles, Alaska: U.S. Geological Survey Bulletin 2020, 67 p., 3 plates, scale 1:250,000.
|Reporters||F.H. Wilson, S.E. Church, and D.P. Bickerstaff (U.S. Geological Survey)|
|Last report date||8/31/2005|