|Quadrangle map, 1:250,000-scale||RB|
|Quadrangle map, 1:63,360-scale||A-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Fourth of July Creek, an east-flowing, 2 1/2 -mile-long tributary of the Sulatna River. The exact location(s) of mining and (or) prospecting along this creek are not known. Coordinates are arbitrarily placed at the approximate midpoint of the creek, in section 27, T. 15 S., R. 17 E., Kateel River Meridian. The location is accurate within 1 mile and corresponds to location 27 of Cobb (1972 [MF405]).|
Geologic descriptionThe bedrock underlying Fourth of July Creek is not known because Quaternary surficial deposits cover the area (Puchner and others, 1998). Fourth of July Creek was first prospected in 1915, and small-scale mining took place along the creek in 1916 (Mertie and Harrington, 1916; Brooks, 1918). No further mention of mining has been made in subsequent years.
|Geologic map unit||(-155.470875238354, 64.1666872965161)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Prospecting and small-scale mining took place along this creek during 1915 and 1916 (Mertie and Harrington, 1916; Brooks, 1918).|
|Indication of production||Yes; small|
Cobb, E.H., 1972, Metallic mineral resources map of the Ruby quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-405, 1 sheet, scale 1:250,000.
Cobb, E.H., and Chapman, R.M., 1981, Mineral occurrences (other than mineral fuels and construction materials) in the Kantishna River and Ruby quadrangles, Alaska: U.S. Geological Survey Open-File Report 81-170, 94 p.
Eberlein, G.D., Chapman, R.M., Foster, H.L., and Gassaway, J.S., 1977, Map and table describing known metalliferous and selected nonmetalliferous mineral deposits in central Alaska: U.S. Geological Survey Open-File Report 77-168-D, 132 p., 1 sheet, scale 1:1,000,000.
Mertie, J.B., Jr., and Harrington, G.L., 1916, Mineral resources of the Ruby-Kuskokwim region, in Brooks, A.H., and others, Mineral Resources of Alaska, Report on Progress of Investigations in 1915: U.S. Geological Survey Bulletin 642-H, p. 223-266.
|Reporters||C.E. Cameron (Alaska Division of Geological and Geophysical Surveys)|
|Last report date||3/22/2000|