Xieite is an iron chromium oxide mineral with formula Fe2+Cr2O4. It is a member of the spinel group and a high pressure polymorph of chromite.[3]
| Xieite | |
|---|---|
| General | |
| Category | Oxide minerals |
| Formula (repeating unit) | Fe2+Cr2O4 |
| IMA symbol | Xi[1] |
| Strunz classification | 4.BB.25 |
| Crystal system | Orthorhombic |
| Crystal class | Dipyramidal (mmm) H-M symbol: (2/m 2/m 2/m) |
| Space group | Bbmm |
| Unit cell | a = 9.462(6) Å b = 9.562(9) Å c = 2.916(1) Å: Z = 4 |
| Identification | |
| Formula mass | 453.91 g/mol |
| Color | Golden yellow |
| Specific gravity | 5.63 |
| References | [2][3] |
It was discovered in samples taken from the Suizhou meteorite which fell in 1986 in the Zengdu District of China.[3]
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.
- ^ Xieite mineral data from Webmineral
- ^ a b c Mindat.org