|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||D-6|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||California Creek is located in T. 10 and 11 N., R. 1 and 2 E., of the Seward Meridian. It joins Glacier Creek two miles from Turnagain Arm near the town of Girdwood (misspelled on the 1994 D-6 map). The map site of this placer mine is on California Creek at an elevation of about 400 feet in the N1/2 section 8, T. 10 N., R. 2 E. This is location 131 and 132 of Cobb and Richter (1972), location 159 of MacKevett and Holloway (1977), location 2 of Tysdal (1978 [MF-880-B]), location 131 and 132 of Cobb and Tysdal (1980), and location P-92 of Jansons and others (1984). The location is accurate to within 300 feet.|
Geologic descriptionCalifornia Creek drains an area underlain chiefly by slate and graywacke of the Valdez Group of Late Cretaceous age (Nelson and others, 1985). The creek flows in a narrow, steep-walled canyon, and the gravels consist of slate, graywacke, and some granite (Tysdal, 1978 [MF-880-B]). There is little accumulation of gravels. An alluvial fan deposited at the lower end of the creek contains disseminated fine-grained gold. Gravels exposed along the creek contain considerable clay and in large part are probably glacial till (Jansons and others, 1984). Grades are reported to be extremely variable.
|Geologic map unit||(-149.142679286819, 60.9741322663373)|
|Mineral deposit model||Placer Au (alluvial) (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||
The creek received a good deal of attention from prospectors between 1898 and 1902 and yielded some gold (Capps, 1916). A concentrate sample near the mouth contained sheelite (Jasper, 1967).The U.S. Bureau of Mines collected two bench samples at the canyon mouth that contained 0.0006 and 0.0007 ounce of gold per cubic yard (Jansons and others, 1984).
|Indication of production||None|
|Production notes||The U.S. Bureau of Mines estimated production at 400 ounces of gold since 1898 (Jansons and others, 1984).|
Additional commentsCalifornia Creek is situated in both the Anchorage and the Seward quadrangles.
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.
Jasper, M.W., 1967, Geochemical investigations, Willow Creek southerly to Kenai Lake region, south central Alaska: Alaska Division of Mines and Minerals Geochemical Report 14, 47 p.
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.
Smith, P.S., 1932, Mineral industry of Alaska in 1929, in Smith, P.S., and others Mineral resources of Alaska, report on progress of investigations in 1929: U.S. Geological Survey Bulletin 824-A, p. 1-81.
Smith, P.S., 1933, Mineral industry of Alaska in 1930: U.S. Geological Survey Bulletin 836-A, p. 1-83.
Smith, P.S., 1933, Mineral industry of Alaska in 1931: U.S. Geological Survey Bulletin 844-A, p. 1-81.
Smith, P.S., 1934, Mineral industry of Alaska in 1932: U.S. Geological Survey Bulletin 857-A, p. 1-91.
Smith, P.S., 1934, Mineral industry of Alaska in 1933: U.S. Geological Survey Bulletin 864-A, p. 1-94.
Smith, P.S., 1936, Mineral industry of Alaska in 1934: U.S. Geological Survey Bulletin 868-A, p. 1-91.
Smith, P.S., 1937, Mineral industry of Alaska in 1935: U.S. Geological Survey Bulletin 880-A, p. 1-95.
Smith, P.S., 1938, Mineral industry of Alaska in 1936: U.S. Geological Survey Bulletin 897-A, p. 1-107.
|Reporters||Jeff A. Huber (Anchorage)|
|Last report date||4/7/2000|