Tancaite-(Ce) is a very rare molybdate mineral[2] with the formula FeCe(MoO4)3•3H2O. It was found in Punta de Su Seinargiu locality on Sardinia, Italy.[3][4] Red crystals of tancaite-(Ce) resemble modified cubes, but the mineral is trigonal (space group R-3).[2] The type locality of tancaite-(Ce) is also a place of discovery of other molybdate minerals, including thorium molybdates ichnusaite and nuragheite.[5]

Tancaite-(Ce)
General
CategoryMolybdate mineral
Formula
(repeating unit)
FeCe(MoO4)3•3H2O
IMA symbolTca-Ce[1]
Strunz classification7.GB.50
Crystal systemTrigonal
Crystal classRhombohedral (3)
H-M symbol: (3)
Space groupR3
Unit cella = 19.290, c = 47.251 [Å]
Identification
References[2]

References

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  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. ^ a b c Mindat
  3. ^ Orlandi, P., and Bonaccorsi, E., 2010. Tancaite-(Ce), IMA 2009-097. CNMNC Newsletter, April 2010, 376; Mineralogical Magazine 74, 375-377
  4. ^ "Tancaite-(Ce) - Mindat.org". Mindat.org. Retrieved 2016-03-06.
  5. ^ "Punta de Su Seinargiu (Su Seinargiu; Su Senargiu), Sarroch, Cagliari Province, Sardinia, Italy - Mindat.org". Mindat.org. Retrieved 2016-03-06.