|Quadrangle map, 1:250,000-scale||CI|
|Quadrangle map, 1:63,360-scale||B-2|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The location is the approximate location of placer claims active in 1976 to 1979. Hot Springs Creek originates southwest of Circle Hot Springs and flows just north of town where it empties into a marsh.|
Geologic descriptionThe headwaters of Hot Springs Creek drain an area underlain by Tertiary granite. The granite is light gray biotite-hornblende-tourmaline monzogranite to syenogranite (Wiltse and others, 1995). Uranium- and/or thorium-bearing allanite, sphene and zircon, and scheelite were found in placer concentrate samples (Cobb, 1976, [OFR 76-633]). Houston International reportedly tested sedimentary uranium in Tertiary sediments near Circle Hot Springs in 1980. This site is a U/Th-W-REE geochemical anomaly.
|Geologic map unit||(-144.672448833441, 65.4766385380186)|
|Indication of production||None|
|MRDS Number||A012218; D002685|
Bates, R.G., and Wedow, Helmuth, Jr., 1953, Preliminary summary review of thorium-bearing mineral occurrences in Alaska: U.S. Geological Survey Circular 202, 13 p.
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.
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.
|Reporters||C.J. Freeman, J.R. Guidetti Schaefer, A.S. Clements (Avalon Development Corporation)|
|Last report date||9/9/1998|