Russellite_(mineral)

Russellite (mineral)

Russellite (mineral)

Bismuth tungstate mineral

Russellite is a bismuth tungstate mineral with the chemical formula Bi2WO6.[2] It crystallizes in the orthorhombic crystal system. Russellite is yellow or yellow-green in color, with a Mohs hardness of 3+1⁄2.[2]

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Russellite is named for the mineralogist Sir Arthur Russell, and the type locality is the Castle-an-Dinas Mine,[2] near St Columb Major in Cornwall, where it was found in 1938 in wolframite.[5] It occurs as a secondary alteration of other bismuth bearing minerals in tin−tungsten hydrothermal ore deposits, pegmatites and greisens. It typically occurs associated with native bismuth, bismuthinite, bismite, wolframite, ferberite, scheelite, ferritungstite, anthoinite, mpororoite, koechlinite, cassiterite, topaz, muscovite, tourmaline and quartz.[3]

References

  1. [1]
    Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
  2. [2]
    Russellite: Russellite data on Mindat.org
  3. [3]
    Handbook of Mineralogy
  4. [4]
    Webmineral data
  5. [5]
    Embrey, P. G.; Symes, R. F. (1987). "The Mines and Mining". Minerals of Cornwall and Devon. London: British Museum (Natural History). p. 54. ISBN 0-565-00989-3.


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