|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||A-7|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The prospect is located in near the west edge of section 10, T. 1 S., R. 1 W., of the Seward Meridian. The workings are located within the city limits of Seward near the western side. This is location 90b of Cobb and Tysdal (1980) and location S-198 of Jansons and others (1984). This location is accurate to within 300 feet.|
Geologic descriptionThe prospect consists of several quartz veins that follow jointing in massive sandstone. The host rock is slate and sandstone of the Valdez Group of Late Cretaceous age (Nelson and others, 1985). The main working is a 265-foot adit with a winze, at an elevation of 100 feet. One 3- to 14-inch-wide vein strikes N55W and dips 81NE at the portal. A second vein is 10 inches wide; it is located 75 feet north of the portal, and it strikes N57W and dips 85N. A third vein, located south of the portal, strikes N75W and dips 85N; this vein is 8 to 14 inches wide and is traceable along the surface for 200 feet (Grant and Higgins, 1909). Metallic minerals in the veins include arsenopyrite, chalcopyrite, galena, pyrite, and sphalerite; gold is also present (Martin and others, 1915). In addition to the 265-foot adit, there is a 12-foot shaft nearby, as well as two other short adits (Martin and others, 1915). No assay results are reported in the literature.
|Geologic map unit||(-149.446043887204, 60.1057375267938)|
|Mineral deposit model||Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)|
|Mineral deposit model number||36a|
|Age of mineralization||Cretaceous or younger; the veins cut rocks of the Valdez Group of Late Cretaceous age.|
|Workings or exploration||The workings included three adits and a shaft. The upper 265-foot adit with a small winze was at 100 feet elevation. The 12-foot shaft was nearby, and two other short adits were below 100 feet elevation (Martin and others, 1915). All of these workings have been filled in. No assay results are reported in the literature.|
|Indication of production||None|
Additional commentsThe property was patented in 1912, and the workings have been filled in. Private homes have been built on the site.
Berg, H.C., and Cobb, E.H., 1967, Metalliferous lode deposits of Alaska: U.S. Geological Survey Bulletin 1246, 254 p.
Cobb, E.H., and Richter, D.H., 1972, Metallic mineral resources map of the Seward quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-466, 2 sheets, scale 1:250,000.
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.
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.
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.
Martin, G.C., Johnson, B.L., and Grant, U.S., 1915, Geology and mineral resources of Kenai Peninsula, Alaska: U.S. Geological Survey Bulletin 587, 243 p.
Moffit, F.H., 1906, Gold fields of the Turnagain Arm region: U.S. Geological Survey Bulletin 277, p. 7-52.
Nelson, S.W., Dumoulin, J. A., and Miller, M.L., 1985, Geologic map of the Chugach National Forest, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1645-B, 16 p., 1 sheet, scale 1:250,000.
|Reporters||Jeff A. Huber and Carol S. Huber (Anchorage)|
|Last report date||1/17/2002|