|Quadrangle map, 1:250,000-scale||UG|
|Quadrangle map, 1:63,360-scale||C-1|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This occurrence is located just north of Kanatak Lagoon and south of Mount Becharof in sec. 3, T. 31 S., R. 42 W., of the Seward Meridian (MacKevett and Holloway, 1977, locality 4; Church and others, 1989: MF-1539I, locality 3). Location is accurate to within 2 miles.|
Geologic descriptionAt this occurrence a quartz diorite pluton of Pliocene age (Wilson and Shew, 1992) cuts sedimentary rocks of the Jurassic Naknek Formation. Case and others (1988) report large magnetic anomalies associated with the pluton. It has been suggested that the anomalies are due to magnetite-rich segregations in mafic phases of the pluton (MacKevett and Holloway, 1977). Skarn-type mineralization may also account for the anomalies. In the past the area has been staked as lode claims for iron.
|Geologic map unit||(-156.10207996269, 57.4992852164824)|
|Age of mineralization||Pliocene?|
|Workings or exploration||In the past the area has been staked as lode claims for iron (U.S. Bureau of Mines, 1973).|
|Indication of production||None|
Additional commentsThis mineral occurrence is located on land selected by the Koniag Native Corporation.
Case, J.E., Detterman, R.L., Wilson, F.H., Chuchel, B.A, and Yount, M.E., 1988, Maps showing aeromagnetic survey and geologic interpretation of the Ugashik and part of the Karluk quadrangles, Alaska: U.S. Geological Survey Map MF-1539-D, 2 sheets, scale 1:250,000.
Church, S.E., Detterman, R.L., and Wilson, F.H., 1989, Mineral and energy resource assessment maps of the Ugashik, Bristol Bay, and western Karluk quadrangles, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF 1539-I, 2 map sheets, scale 1:250,000.
Church, S.E., Frisken J.G., and Wilson, F.H., 1989, Interpretation of exploration geochemical data from Ugashik, Bristol Bay, and western Karluk quadrangles, Alaska: U.S Geological Survey Bulletin 1858, 45 p.
MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.
U.S. Bureau of Mines, 1973, Alaska 1:250,000-scale quadrangle map overlays showing mineral deposit locations, principal minerals, and number and type of claims: U.S. Bureau of Mines Open-File Report 20-73, 95 overlays (updated in 1986, 1987).
|Reporters||S.H. Pilcher (Anchorage)|
|Last report date||2/1/2000|