|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||D-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This prospect is located at an elevation of about 500 feet, on the southeast side of the ridge separating Shotgun Cove from Blackstone Bay. It is in the SE 1/4 section 15, T. 8 N., R 5 E., of the Seward Meridian. This is location 126 of Cobb and Tysdal (1980) and location S-178 of Jansons and others (1984). Cobb and Tysdal (1980) summarized the relevant references under the name Singletary-O'Neil. This location is accurate to within a quarter of a mile.|
Geologic descriptionThis occurrence consists of several thin, auriferous quartz veins in sheared siltstone and sandstone of the Valdez Group of Late Cretaceous age (Cobb and Tysdal, 1980). The shear zone is probably part of the Port Wells fault system, which generally strikes northeast and dips steeply northwest (Hoekzema and Sherman, 1983). No assays are reported.
|Geologic map unit||(-148.553308654521, 60.7785025029391)|
|Mineral deposit model||Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)|
|Mineral deposit model number||36a|
|Age of mineralization||Oligocene or younger; the veins are probably associated with the Port Wells fault system, which cuts Oligocene intrusive rocks northeast of this occurrence.|
|Workings or exploration||Some work reported in 1912 (Brooks, 1913). No assay results are reported.|
|Indication of production||None|
Brooks, A.H., 1913, Mineral resources of Alaska, report on progress of investigations in 1912: U.S. Geological Survey Bulletin 542, 308 p.
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.
Hoekzema, R.P., and Sherman, G.E., 1983, Mineral investigations in the Chugach National Forest, Alaska (Peninsula study area): U.S. Bureau of Mines in-house report; held at U.S. Bureau of Land Management Alaska State Office, Anchorage, 524 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||12/7/1999|