Alaska
Prospect

Rapid River

Alaska, United States
BerylliumFluorine-FluoriteLeadTinZincCopperSilver
⌖ Show on mapUSGS source ↗
Commodities
PrimaryBeryllium, Fluorine-Fluorite
SecondaryLead, Tin, Zinc, Copper, Silver
Materials
Ore mineralsBertrandite, Cassiterite, Chrysoberyl, Euclase, Fluorite, Galena, Phenacite, Sphalerite
GangueDiaspore, Hematite, Tourmaline, Silica, Mica
Geology
AlterationSome lamprophere dikes have tactite borders but these may not be related to mineralization. The origin of dolomite and dolomite breccia is also not clear here. Mass balance calculations show significant SiO2, Al2O3, alkali, and fluorine enrichment with mineralization (Sainsbury, 1968, p. 1567).
Economic & production
Development statusProspect
Identification
Deposit ID10308402
RegionNA
Data scoreB
Coordinates65.44826, -167.3034
References
Sainsbury, C.L., 1963, Beryllium deposits of the western Seward Peninsula, Alaska: U.S. Geological Survey Circular 479, 18 p.Sainsbury, C.L., 1968, Tin and beryllium deposits of the central York Mountains, Alaska, in Ridge, J. D., ed., Ore deposits in the United States, 1933-67: American Institute of Mining, Metallurgy, and Petroleum Engineers, v. 2, p. 1555-1572.Cobb, E.H., and Sainsbury, C.L., 1972, Metallic mineral resource map of the Teller quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-426, 1 sheet, scale 1:250,000.Sainsbury, C.L., 1972, Geologic map of the Teller quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Map I-685, 4 p., 1 sheet, scale 1:250,000.Hudson, T.L., and Arth, J. G., 1983, Tin-granites of Seward Peninsula, Alaska: Geological Society of America Bulletin, v. 94, p. 768-790.Sainsbury, C.L., 1969, Geology and ore deposits of the central York Mountains, western Seward Peninsula, Alaska: U.S. Geological Survey Bulletin 1287, 101 p.Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Teller quadrangle, Alaska: U.S. Geological Survey Open-File Report 75-587, 130 p.