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
CategoryOxide minerals
Formula
(repeating unit)
Fe2+Cr2O4
IMA symbolXi[1]
Strunz classification4.BB.25
Crystal systemOrthorhombic
Crystal classDipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)
Space groupBbmm
Unit cella = 9.462(6) Å
b = 9.562(9) Å
c = 2.916(1) Å: Z = 4
Identification
Formula mass453.91 g/mol
ColorGolden yellow
Specific gravity5.63
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

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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. ^ Xieite mineral data from Webmineral
  3. ^ a b c Mindat.org