|Current site name||Greenhorn Gulch|
|Geographic coordinates:||-145.07404, 65.45084 (WGS84)|
|Relative position||Greenhorn Gulch extends about 1.5 mi north and 1.5 mi south of the coordinate intersection; it is a tributary of Boulder Creek. Mining activity in the 1970's and 1980's also has occurred at the junction with Tinhorn Gulch.|
|(click for info)|
|Materials||Type of material|
|USGS model code||39a|
|BC deposit profile||C01. C02|
|Deposit model name||Placer Au-PGE|
|Mark3 model number||54|
|Host or associated||Host|
|Rock type||Unconsolidated Deposit > Gravel|
|Development status||Past Producer|
|Agency||Database name||Acronym||Record ID||Notes|
|USGS||Mineral Resources Data System||MRDS||A012232|
|USGS||Alaska Resource Data File||ARDF||CI023|
Spurr, J.E., 1898, Geology of the Yukon gold district, Alaska, with an introductory chapter on the history and conditions of the district to 1897 by H.B. Goodrich: U.S. Geological Survey 18th Annual Report, Part 3, p. 87-392.
Brooks, A.H., 1907, The Alaskan mining industry in 1906: U.S. Geological Survey Bulletin 314, p. 19-39.
Ellsworth, C.E., 1912, Placer mining in the Fairbanks and Circle Disctricts: U.S. Geological Survey Bulletin 520, p. 240-245.
Ellsworth, C.E., and Davenport, R.W., 1913, Placer mining in the Yukon-Tanana region: U.S. Geological Survey Bulletin 542, 303 p.
Mertie, J.B., Jr., 1932, Mining in the Circle district: U.S. Geological Survey Bulletin 824, p. 155-172.
Mertie, J.B., Jr., 1938, Gold placers of the Fortymile, Eagle, and Circle districts, Alaska: U.S. Geological Survey Bulletin 897-C, p. 133-261.
Cobb, E.H., 1972, Metallic mineral resources map of the Circle quadrangle, Alaska: U.S. Geological Survey Misc. Field Studies Map MF-391, 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 Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-633, 72 p.
Eakins, G.R., Jones, B.K. and Forbes, R.B., 1977, Investigation of Alaska's uranium potential: Alaska Division of Geological and Geophysical Surveys Open-File Report 109, 213 p., 10 sheets, scale 1:40,000.
Barker, J.C., 1979, Trace element study of the Circle mining district, Alaska: U.S. Bureau of Mines Open-File Report 57-79, 74 p.
Menzie, W.D., Foster, H.L., Tripp, R.B., and Yeend, W.E., 1983, Mineral resource assessment of the Circle quadrangle, Alaska: U.S. Geological Survey Open-File Report 83-170-B, 61 p., 1 sheet, 1:250,000.
Yeend, W.E., 1991, Gold placers of the Circle district, Alaska - past, present, and future: U.S. Geological Survey Bulletin 1943, 42 p.
Wiltse, M.A., Reger, R.D., Newberry, R.J, Pessel, G.H., Pinney, D.S., Robinson, M.S., and Solie, D.N., 1995, Bedrock geologic map of the Circle mining district, Alaska: Alaska Division of Geological and Geophysical Surveys Report of Investigations 95-02b, 1 sheet, scale 1:63,360.
Prindle, L.M., 1913, A geologic reconnaissance of the Circle quadrangle, Alaska: U.S. Geological Survey Bulletin 538, 82 p.
|Subject category||Comment text|
|Deposit||Model Name = Placer gold deposit (Cox and Singer, 1986; model 39a)|
|Deposit||Other Comments = Greenhorn Gulch is the only part of the Boulder Creek drainage that has had significant placer mining activity. Greenhorn Gulch has also been called Greenhorn Creek but it should not be confused with the much less productive 'Greenhorn Creek' that is a tributary of Bottom Dollar Creek.|
|Reporter||09-SEP-98||C.J. Freeman||Avalon Development Corporation|
|Reporter||09-SEP-98||J.R. Guidetti Schaefer||Avalon Development Corporation|
|Reporter||09-SEP-98||Clements, A.S.||Avalon Development Corporation|