Oxide mineral
(repeating unit)Fe2+Cr2O4 | | IMA symbol | Xi[1] |
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| Strunz classification | 4.BB.25 |
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| Crystal system | Orthorhombic |
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| Crystal class | Dipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m) |
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| Space group | Bbmm |
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| Unit cell | a = 9.462(6) Å
b = 9.562(9) Å
c = 2.916(1) Å: Z = 4 |
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| Identification |
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| Formula mass | 453.91 g/mol |
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| Color | Golden yellow |
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| Specific gravity | 5.63 |
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| References | [2][3] |
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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]
It was discovered in samples taken from the Suizhou meteorite which fell in 1986 in the Zengdu District of China.[3]
References
- ^ 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
