|Quadrangle map, 1:250,000-scale||CY|
|Quadrangle map, 1:63,360-scale||B-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||Ben Creek is a southeast-flowing tributary of Sam Creek, which flows northeast to join the Yukon River. Ben Creek is approximately 4.5 miles long. The location is arbitrarily placed at the approximate midpoint of the creek, in section 3, T. 5 N., R. 23 E., of the Fairbanks Meridian. The location is accurate to within 2.5 miles.|
Geologic descriptionThe bedrock in the Ben Creek drainage is composed of the Middle Jurassic to Lower Cretaceous Glen Shale (Dover and Miyaoka, 1988). Small placer gold deposits have been found along Ben Creek (Mertie, 1942). One assay of the gold from Ben Creek had values of 896 parts Au per thousand and 100 parts Ag per thousand (Mertie, 1938). Mining on the creek began as early as 1921 and continued intermittently until at least 1965. A boomer dam was constructed along Ben Creek to store and control water for sluicing. In 1965, production was reported as 26 troy ounces of gold and 2 troy ounces of silver (National Park Service, 1990).
|Geologic map unit||(-143.022389322888, 65.2796704779515)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Tertiary-Quaternary?|
|Workings or exploration||Small placer gold deposits have been found in Ben Creek (Mertie, 1942). Mining on the creek began as early as 1921 and continued intermittently until at least 1965. A boomer dam was constructed to control and store water for sluicing (National Park Service, 1990).|
|Indication of production||Yes|
|Production notes||In 1965, production was reported as 26 troy ounces of gold and 2 troy ounces of silver (National Park Service, 1990).|
Additional commentsSee also Sam Creek (CY027). This site is within the Yukon-Charley Rivers National Preserve.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Charley River and Coleen quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-632, 45 p.
Dover, J.A., and Miyaoka, R.T., 1988, Reinterpreted geologic map and fossil data, Charley River quadrangle, east-central Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2004, 2 sheets, scale 1:250,000.
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.
Mertie, J.B., Jr., 1942, Tertiary deposits of the Eagle-Circle district, Alaska: U.S. Geological Survey Bulletin 917-D, p. 213-264.
National Park Service, 1990, Final environmental impact statement, volume 1, Mining in Yukon-Charley Rivers National Preserve, Alaska: National Park Service, Anchorage, Alaska, p. 36-44.
|Reporters||C.E. Cameron (ADGGS)|
|Last report date||4/7/2000|