|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||C-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The occurrence is located in the SW1/4 section 8, T. 5 N., R. 11 E., of the Seward Meridian. It is situated at sea level on the south shore of Eleanor Island. This is location 119 of MacKevett and Holloway (1977), location 195 of Cobb and Tysdal (1980), and location S-85 of Jansons and others (1984). This location is accurate to within a quarter of a mile.|
The occurrence consists of a shear zone containing a series of thin layers and lenses of massive pyrrhotite, along with chalcopyrite and sphalerite. The host rock is Tertiary Orca Group slate and pillow basalt (Cobb and Tysdal, 1980). Workings on the prospect consist of two adits that connect underground and total 80 feet in length.Tysdal (1978 [MF-880-A]) reported assay results of 5 ppm silver, 2,000 ppm copper, 500 ppm lead, and 1,700 ppm zinc. The U.S. Bureau of Mines collected a single 5-foot chip sample that contained 515 ppm copper and 460 ppm zinc (Jansons and others, 1984).
|Geologic map unit||(-147.569777935044, 60.5370775175043)|
|Mineral deposit model||Besshi massive sulfide (Cox and Singer, 1986; model 24b)|
|Mineral deposit model number||24b|
|Age of mineralization||Tertiary or younger; the occurrence is in slate near pillow basalt in the Orca Group of Tertiary age.|
|Workings or exploration||The workings on this prospect consist of two adits that connect underground and total 80 feet in length (Jansons and others, 1984). Tysdal (1978 [MF-880-A]) reported assay results of 5 ppm silver, 2,000 ppm copper, 500 ppm lead, and 1,700 ppm zinc. The U.S. Bureau of Mines collected a single 5-foot chip sample that contained 515 ppm copper and 460 ppm zinc (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.
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||2/10/2000|