|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||Iron Creek is location 3 of Cobb (1972 [MF-390]). Iron Creek drains northward into Woodchopper Creek. The coordinates are for the center of the discovery claim located at the mouth of Iron Creek in section 3, T. 5 N., R. 21 E., of the Fairbanks Meridian. The location is accurate to within half a mile.|
Prospects along Iron Creek were first reported by Brooks in 1907. The pay streak was reported to be irregular and spotty, with coarse gold of high grade. One sample assayed $18.75 an ounce (1930 dollars) (Mertie, 1930). The bedrock at the head of Iron Creek is composed of Cretaceous to Tertiary sedimentary rocks and Upper Devonian (?) conglomerate. In the lower part of the drainage the conglomerate contains pebble- to boulder-size clasts of quartzite and chert (Dover and Miyaoka, 1988).Iron Creek was first staked in 1901, and almost all early work was done by drift mining. In 1926, production was reported to be 9 troy ounces of gold and 1 troy ounce of silver. Iron Creek may still be a site of active mining and prospecting (National Park Service, 1990).
|Geologic map unit||(-143.182393454786, 65.2896671596352)|
|Mineral deposit model||Placer Au (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Iron Creek was first staked in 1901, and nearly all of the early work was done by drift mining. Iron Creek may still be a site of mining and prospecting (National Park Service, 1990).|
|Indication of production||Yes; small|
|Production notes||In 1926, production was reported to be 9 troy ounces of gold and 1 troy ounce of silver (National Park Service, 1990).|
Additional commentsSee also Woodchopper Creek (CY038), Alice Gulch (CY002), Mineral Creek (CY020), and Dome Creek (CY010). This site is within the Yukon-Charley Rivers National Preserve.
Brooks, A.H., 1907, The Alaskan mining industry in 1906: U.S. Geological Survey Bulletin 314-A, p. 19-39.
Cobb, E.H., 1972, Metallic mineral resources map of the Charley River quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-390, 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 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., 1930, Geology of the Eagle-Circle district, Alaska: U.S. Geological Survey Bulletin 816, 168 p.
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|