|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||C-8|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The prospect is located in the SE1/4 section 20, T. 6 N., R. 2 W., of the Seward Meridian. It is situated on the north valley wall of Henry Creek at an elevation of 4,000 feet. This is location 24 of Cobb and Richter (1972), locations 33 and 211 of MacKevett and Holloway (1977), location 48 of Cobb and Tysdal (1980), and location S-250 of Jansons and others (1984). This location is accurate to within a quarter of a mile.|
Geologic descriptionThis deposit consist of arsenopyrite mineralization in a fractured felsic dike. The dike intrudes slate of the Valdez Group of Late Cretaceous age which contains arsenopyrite-bearing quartz stringers adjacent to the dike (Cobb and Tysdal, 1980). The dike strikes N30E and dips 30NW; it averages 2.5 feet thick and can be traced for 1,000 feet along strike.
|Geologic map unit||(-149.660963216059, 60.5900342352476)|
|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; mineralization is in a dike that cuts rocks of the Valdez Group of Late Cretaceous age.|
|Workings or exploration||There are several prospect pits on the dike. The U.S. Bureau of Mines collected one chip sample that assayed 0.01 ounce of gold per ton, 0.08 ounce of silver per ton, and 200 ppm arsenic (Jansons and others, 1984).|
|Indication of production||None|
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.
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.
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.
Tuck, Ralph, 1933, The Moose Pass-Hope district, Kenai Peninsula, Alaska: U.S. Geological Survey Bulletin 849-I, p. 469-530.
|Reporters||Jeff A. Huber (Anchorage)|
|Last report date||1/7/2000|