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 | |
| Category | Molybdate mineral |
| Formula (repeating unit) | FeCe(MoO4)3•3H2O |
| IMA symbol | Tca-Ce[1] |
| Strunz classification | 7.GB.50 |
| Crystal system | Trigonal |
| Crystal class | Rhombohedral (3) H-M symbol: (3) |
| Space group | R3 |
| Unit cell | a = 19.290, c = 47.251 [Å] |
| Identification | |
| References | [2] |
References
edit- ^ 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.
- ^ a b c Mindat
- ^ Orlandi, P., and Bonaccorsi, E., 2010. Tancaite-(Ce), IMA 2009-097. CNMNC Newsletter, April 2010, 376; Mineralogical Magazine 74, 375-377
- ^ "Tancaite-(Ce) - Mindat.org". Mindat.org. Retrieved 2016-03-06.
- ^ "Punta de Su Seinargiu (Su Seinargiu; Su Senargiu), Sarroch, Cagliari Province, Sardinia, Italy - Mindat.org". Mindat.org. Retrieved 2016-03-06.
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