|Quadrangle map, 1:250,000-scale||CI|
|Quadrangle map, 1:63,360-scale||A-3|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The location is the approximate center of a discontinous placered area about three quarters of a mile long along Shamrock Creek. Shamrock Creek is a tributary to the Middle Fork, Chena River.|
Geologic descriptionBedrock is schist of Paleozoic and/or Precambrian(?) age (Eberlein and others, 1977, p. 24). Placer gold has been mined. Small scale suction dredge used in 1980. Years of known activity are 1924, 1938 to 1939, 1966, 1968 to 1972, and 1976 (Menzie and others, 1983, p. 51).
|Geologic map unit||(-145.425410227772, 65.014615917693)|
|Mineral deposit model||Placer gold deposit (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Workings or exploration||Small scale suction dredge used in 1980. Years of known activity are 1924, 1938 to 1939, 1966, 1968 to 1972, and 1976 (Menzie and others, 1983, p. 51).|
|Indication of production||Yes; small|
|Production notes||Mining has been reported (see workings/exploration); however, amount of production is unknown.|
Additional commentsSee also Palmer Creek, ARDF no. CI044 and Van Culers Bar, ARDF no. CI087.
Cobb, E.H., 1972, Metallic mineral resources map of the Circle quadrangle, Alaska: U.S. Geological Survey Miscellaneous 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.
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 77-168D, 132 p.
Lampright, R.L., 1996, Gold placer deposits near Fairbanks Alaska--An inventory of the gold placer mines, prospects, and deposits located within the Big Delta Charley River, Circle, Eagle, Fairbanks, and Livengood quadrangles: Nederland, Colorado, Iron Fire Publications, Anchorage, Alaska, 135 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.
Smith, P.S., 1939, Mineral industry of Alaska in 1938: U.S. Geological Survey Bulletin 917-A, p. 1-113.
|Reporters||C.J. Freeman, J.R. Guidetti Schaefer, A.S. Clements (Avalon Development Corporation)|
|Last report date||9/14/1998|