|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||D-7|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This mine is located in the SW1/4 section 7, T. 9 N., R. 1 W., of the Seward Meridian. It is situated on Bear Creek at an elevation of 2,200 feet. This is location 5 of Cobb and Richter (1972), location 5 of MacKevett and Holloway (1977), location 10 of Cobb and Tysdal (1980), and location S-301 of Jansons and others (1984). The location is accurate to within 300 feet.|
The deposit at this mine consists of an auriferous, sulfide-bearing, quartz-calcite vein as much as about 16 inches thick. The vein is hosted in sandstone of the Valdez Group of Late Cretaceous age and Eocene(?) felsic dikes (Cobb and Tysdal, 1980). The vein contains arsenopyrite, pyrite, galena, sphalerite, an unknown copper mineral, and gold.Workings consist of a 30-foot-deep flooded shaft and a 6-foot adit about 625 feet west of the shaft (Hoekzema and Sherman, 1983).
|Geologic map unit||(-149.530873435657, 60.8804399405856)|
|Mineral deposit model||Low-sulfide Au-quartz vein (Cox and Singer, 1986; model 36a)|
|Mineral deposit model number||36a|
|Age of mineralization||Eocene(?) or younger; the vein cuts Eocene(?) felsic dikes.|
|Alteration of deposit||Both the dikes and sandstone show sericitic alteration (Cobb and Tysdal, 1980).|
|Workings or exploration||
The workings consist of a 30-foot shaft with a small drift that filled with water during mining and a 6-foot adit about 625 feet west of the shaft. A five-stamp mill was erected between 1912 and 1914, but not enough ore was found and the mill was removed (Tuck, 1933).The U.S. Bureau of Mines sampled the dump of the mine in 1981 (Hoekzema and Sherman, 1983); the two grab samples they collected contained 6.2 ppm and 0.86 ppm gold and 24.7 and 1.7 ppm silver.
|Indication of production||Yes; small|
|Production notes||No recorded production (Jansons and others, 1984).|
Brooks, A.H., 1911, The mining industry in 1910, in Brooks, A.K., and others, Mineral resources of Alaska, report on progress of investigations in 1910: U.S. Geological Survey Bulletin 480-B p. 21-43.
Brooks, A.H., 1914, Mineral resources of Alaska; report on progress of investigations in 1913: U.S. Geological Survey Bulletin 592, 413 p.
Brooks, A.H., 1915, Mineral resources of Alaska; report on progress of investigations in 1914: U.S. Geological Survey Bulletin 622, 380 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.
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., 1905, Gold placers of Turnagain Arm, Cook Inlet, in Brooks, A.H., Report on progress of investigations of mineral resources of Alaska in 1904, U.S. Geological Survey Bulletin 259, p. 90-99.
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.
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||3/9/2000|