Tancaite-(Ce)
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| Tancaite-(Ce) | |
|---|---|
| General | |
| Category | Molybdate mineral |
| Formula | 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] |
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]
