|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||D-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The occurrence is located on southeastern Fairmount Island in the S1/2 section 13, T. 9 N., R. 11 E., of the Seward Meridian. This is location 194 of Tysdal (1978) and location S-113 of Jansons and others (1984). This location is accurate to within half a mile.|
Geologic descriptionThe country rock in the area of this occurrence is sedimentary strata of the Tertiary Orca Group (Cobb and Tysdal, 1980). The occurrence is in graywacke and consists of a 2-foot-wide clay-rich shear zone containing a lens of massive chalcopyrite, pyrite, pyrrhotite, and sphalerite (Jansons and others, 1984). The U.S. Bureau of Mines sampled this occurrence and collected a chip sample that contained 1.7 percent zinc, 0.1 percent copper, and 1.59 ppm gold (Jansons and others, 1984).
|Geologic map unit||(-147.42686120322, 60.866469062502)|
|Mineral deposit model||Besshi massive sulfide (Cox and Singer, 1986; model 24b)|
|Mineral deposit model number||24b|
|Age of mineralization||Tertiary or younger; the deposit is in graywacke of the Tertiary Orca Group.|
|Workings or exploration||The U.S. Bureau of Mines sampled this occurrence; a chip sample contained 1.7 percent zinc, 0.1 percent copper, and 1.59 ppm gold (Jansons and others, 1984).|
|Indication of production||None|
Cobb, E.H., and Tysdal, R.G., 1980, Summaries of data on and list of references to metallic and selected nonmetallic mineral deposits in the Blying Sound and Seward quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-621, 276 p.
Condon, W.H., and Cass, J.T., 1958, Map of a part of the Prince William Sound area, Alaska, showing linear geologic features as shown on aerial photographs: U.S. Geological Survey Miscellaneous Investigations Series Map I-273, 1 sheet, scale 1:125,000.
Grant, U.S., and Higgins, D.F., Jr., 1909, Notes on geology and mineral prospects in the vicinity of Seward, Kenai Peninsula: U.S. Geological Survey Bulletin 379-C, p. 98-107.
Jansons, Uldis, Hoekzema, R.B., Kurtak, J.M., and Fechner, S.A., 1984, Mineral occurrences in the Chugach National Forest, southcentral Alaska: U.S. Bureau of Mines Mineral Land Assessment 5-84, 218 p., 2 sheets, scale 1:250,000.
MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous and selected non-metalliferous mineral deposits in the eastern part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-A, 99 p., 1 sheet, scale 1:1,000,000.
|Reporters||Jeff A. Huber (Anchorage)|
|Last report date||1/31/2000|