|Quadrangle map, 1:250,000-scale||HE|
|Quadrangle map, 1:63,360-scale||D-4|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||This placer prospect is on Lignite Creek, about 3 miles upstream from its junction with the Nenana River. The map site is near the mouth of Frances Creek, in sec. 3, T. 12 S., R. 7 W., of the Fairbanks Meridian.|
Geologic descriptionLignite Creek drains an Eocene to Miocene sequence of poorly consolidated, pebbly sandstone, claystone and subbituminous coal. The sequence pinches out northward and is overlapped unconformably by Tertiary Nenana Gravel (Wilson and others, 1998). The southern edge of the Lignite Creek drainage basin is underlain by of Birch Creek Schist. Placer gold has been reported in Lignite Creek near the mouth of Frances Creek. The sources of the gold probably are paleoplacers in the Nenana Gravel.
|Geologic map unit||(-148.902322399401, 63.9095422397818)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a)|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Surface workings prior to 1918.|
|Indication of production||Undetermined|
Cobb, E.H., 1978, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Healy quadrangle, Alaska: U.S. Geological Survey Open-File Report 78-1062, 113 p.
Joesting, H.R., 1942, Antimony and tungsten deposits in the Fairbanks and adjacent districts: Alaska Territorial Department of Mines Miscellaneous Report 194-11, 26 p.
Maddren, A.G., 1918, Gold placers near the Nenana coal field: U.S. Geological Survey Bulletin 662-G, p. 363-402.
|Reporters||N. Van Wyck (Stevens Exploration Management Corporation)|
|Last report date||4/7/2000|