|Quadrangle map, 1:250,000-scale||PM|
|Quadrangle map, 1:63,360-scale||C-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This site is located on the Alaska Peninsula on the west side of Clark Bay approximately 2 miles north of Waterfall Point. It is referred to as PMRGX-16 by Wilson and others (1988, locality 65). The locality is accurate to within 1,000 feet.|
Geologic descriptionWilson and others (1988) describe this occurrence as a vertical, sericitically altered, zone containing abundant sulfides in volcaniclastic sandstone and siltstone (Wilson and others, 1988). The sedimentary rocks probably are part of the Paleocene to Eocene Tolstoi Formation (Wilson and others, 1995). Amygdaloidal andesite flows are also present in the area. One sample collected by the U.S. Geological Survey in the mid-1980s was reported to be anomalous in antimony, arsenic, barium, and zinc (Wilson and others, 1988).
|Geologic map unit||(-160.024015848213, 55.746189007375)|
|Age of mineralization||Tertiary.|
|Alteration of deposit||Sericite alteration is present in an altered zone within sandstone and siltstone.|
|Workings or exploration||Rock sample 83AWs91, collected by the U.S. Geological Survey in the mid-1980s, is reported to be anomalous in antimony, arsenic, barium, and zinc (Wilson and others, 1988).|
|Indication of production||None|
Additional commentsThe site is located on land selected by the Aleut Corporation.
Angeloni, L.M., Wilson, F.H., and Sutley, S.J., 1985, Map and tables showing preliminary rock geochemical data, Port Moller, Stepovak Bay, and Simonof Island quadrangles, Alaska: U.S. Geological Survey Open-File Report 85-470, 179 p., 1 sheet, scale 1:250,000.
Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 sheet, scale 1:250,000.
|Last report date||1/24/2001|