|Quadrangle map, 1:250,000-scale||FB|
|Quadrangle map, 1:63,360-scale||A-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Hearst Creek mine is probably in sec. 4 or 5, T. 10 S., R. 3 W., Fairbanks Meridian. In 1905, placer mining took place approximately 2 miles above the mouth of Hearst Creek (Prindle, 1907, p. 211). The mine is locality 75 of Cobb (1972 [MF 410]).|
Geologic descriptionIn 1905, placer mining was reported (Prindle, 1907). Gold is found in the basal stream gravels and on the coal-bearing bedrock (Maddren, 1918). The creek begins in Nenana Gravel and cuts down into the underlying coal-bearing formation (Maddren, 1918).
|Geologic map unit||(-148.167343995101, 64.0825572296009)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary placer.|
|Workings or exploration||In 1905, placer mining was reported (Prindle, 1907, p. 211).|
|Indication of production||Yes; small|
|Production notes||There is no information available of the amount of gold that was produced.|
Brooks, A.H., 1911, The Mount McKinley region, Alaska, with descriptions of the igneous rocks and of the Bonnifield and Kantishna districts by L.M. Prindle: U.S. Geological Survey Professional Paper 70, 234 p.
Capps, S.R., 1911, Mineral resources of the Bonnifield region: U.S. Geological Survey Bulletin 480-H, p. 218-235.
Capps, S.R., 1912, The Bonnifield region, Alaska: U.S. Geological Survey Bulletin 501, 64 p., 1 sheet, scale 1:250,000.
Cobb, E.H., 1972, Metallic mineral resources map of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-410, 1 sheet, scale 1:250,000.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Fairbanks quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-662, 174 p.
Maddren, A.G., 1918, Gold placers near the Nenana coal field: U.S. Geological Survey Bulletin 662-G, p. 363-402.
|Reporters||J.R. Guidetti Schaefer and C.J. Freeman (Avalon Development Corporation)|
|Last report date||7/31/2001|