|Quadrangle map, 1:250,000-scale||SR|
|Quadrangle map, 1:63,360-scale||C-7|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The prospect is located in the NW1/4 section 36, T. 7 N., R. 2 W., of the Seward Meridian, at elevations between 2,700 and 3,250 feet. The adit is located at 3,250 feet elevation. The prospect is situated on the north side of Colorado Creek, 2 miles west of the Seward Highway. The Independence prospect is mislocated on the 1951 Seward C-7 topographic map. The location of the map site is accurate to within a quarter of a mile. This is location 22 of Cobb and Richter (1972), location 30 of MacKevett and Holloway (1977), location 44 of Cobb and Tysdal (1980), and location S-264 of Jansons and others (1984).|
Geologic descriptionThe deposit at this prospect consists of quartz stringers that heal fractures in an Eocene(?) felsic dike as much as 4 feet wide. The quartz makes up about 10 percent of the dike and contains only small amounts of unspecified ore minerals (Martin and others, 1915). The felsic dike is hosted by Valdez Group country rock of Late Cretaceous age (Nelson and others, 1985).
|Geologic map unit||(-149.559651801396, 60.6553251268501)|
|Mineral deposit model||Low-sulfide Au-quartz veins (Cox and Singer, 1986; model 36a)|
|Mineral deposit model number||36a|
|Age of mineralization||Eocene or younger; the host rock is probably Eocene.|
|Workings or exploration||Workings consist of one 12-foot adit at an elevation of 3,250 feet (Tuck, 1933) and several small prospect pits (Jansons and others, 1984). In 1979, the U.S. Bureau of Mines collected a grab sample, which assayed a trace of gold and 0.01 ounce of silver per ton (Jansons and others, 1984). They did not sample the adit because it was caved.|
|Indication of production||None|
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.
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, 1981, 1979 Bureau of Mines sample sites and analytical results for samples collected in the Chugach National Forest, southcentral Alaska: U.S. Bureau of Mines Open File Report 83-81, 229 p. 5 sheets.
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||1/22/2000|