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Xieite

A valid IMA mineral species
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About XieiteHide

09158320014946331515089.jpg
Xiande Xie
Formula:
Fe2+Cr2O4
Specific Gravity:
5.63
Crystal System:
Orthorhombic
Name:
Named by M. Chen, J. Shu, and H. Mao in 2008 in honor of Xiande Xie (谢先德) (October 1934, Zhenjiang, Jiangsu Province, China - ), the former president of the International Mineralogical Association from 1990 to 1994 and professor at the Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, for his contribution to mineralogy and shock effects of minerals.
Polymorph of:
High-pressure polymorph of chromite.
The first natural occurrence of a high-pressure polymorph of chromite has been discovered in the shock-metamorphosed Suizhou meteorite. The composition of this high-pressure polymorph is identical to that of the precursor chromite. The Raman spectrum of this polymorph is distinct from that of chromite. The P-T conditions for the phase transformation from chromite to the CaTi2O4-structured polymorph are estimated at 20–23 GPa and 1800 to 2000 °C, respectively. This dense CaTi2O4-structured FeCr2O4 phase could be a host phase for Cr, Al, Fe, Mg and Mn and other metallic elements in the deep Earth.


Unique IdentifiersHide

Mindat ID:
35792
Long-form identifier:
mindat:1:1:35792:2
GUID
(UUID V4):
a7668053-c5ef-4202-98e2-e5bc030daf53

IMA Classification of XieiteHide

Approved
IMA Formula:
FeCr2O4
Approval year:
2007
First published:
2008
Approval history:
IMA 2007-056

Classification of XieiteHide

4.BB.25

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
B : With only medium-sized cations

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
XiIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of XieiteHide

Hardness Data:
Could not be measured
Comment:
Harder than chromite.
Density:
5.63 g/cm3 (Measured)    5.342 g/cm3 (Calculated)

Chemistry of XieiteHide

Mindat Formula:
Fe2+Cr2O4

Crystallography of XieiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Cell Parameters:
a = 9.462(6) Å, b = 9.562(9) Å, c = 2.916(1) Å
Ratio:
a:b:c = 0.99 : 1 : 0.305
Unit Cell V:
263.8 ų
Z:
4
Comment:
space group Bbmm

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.675 Å(100)
2.389 Å(20)
2.089 Å(10)
1.953 Å(90)
1.566 Å(60)
1.439 Å(15)
1.425 Å(15)
1.337 Å(40)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 2: Planetesimal differentiation and alteration4.566-4.550
6 : Secondary asteroid phases4.566-4.560

Type Occurrence of XieiteHide

General Appearance of Type Material:
Compact polycrystalline aggregates of about 5-40 µm in grain size and commonly displays as pseudomorph of chromite crystals or its fragments.
Place of Conservation of Type Material:
Institute of Geochemistry, Chinese Academy of Sciences, Guiyang, Guizhou Province, China.
Geological Setting of Type Material:
Shock-produced veins of Suizhou L6 chondrite formed through solid-state transformation of chromite, and its occurrence is intimately associated with the shock veins of meteorite.
Associated Minerals at Type Locality:

Synonyms of XieiteHide

Other Language Names for XieiteHide

Simplified Chinese:谢氏超晶石

Relationship of Xieite to other SpeciesHide

Other Members of this group:
ChenmingiteFeCr2O4Orth. mmm (2/m 2/m 2/m) : Pnma
EllinaiteCaCr2O4Orth. mmm (2/m 2/m 2/m) : Pnma
HarmuniteCaFe2O4Orth. mmm (2/m 2/m 2/m) : Pbcm
MarokiteCaMn3+2O4Orth.
Tschaunerite (Fe2+)(Fe2+Ti4+)O4Orth. mmm (2/m 2/m 2/m) : Cmcm
WernerkrauseiteCa(Fe3+,Mn3+)2Mn4+O6Orth. mmm (2/m 2/m 2/m) : Pnma

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Xieite associated with ForsteriteMg2SiO4
1 photo of Xieite associated with Lingunite(Na,Ca)AlSi3O8
1 photo of Xieite associated with MajoriteMg3(MgSi)(SiO4)3
1 photo of Xieite associated with Ringwoodite(Mg,Fe2+)2SiO4

Related Minerals - Strunz-mindat GroupingHide

4.BB.Elgoresyite(Mg5Si2)O9Mon. 2/m : B2/m
4.BB.ChenmingiteFeCr2O4Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.DellagiustaiteV2+Al2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.ThermaerogeniteCuAl2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.ChukocheniteLiAl5O8Orth. mmm (2/m 2/m 2/m) : Imma
4.BB.GarpenbergiteMn6◻AsSbO10(OH)2Orth. mmm (2/m 2/m 2/m)
4.BB.MagnéliiteTi3+2Ti4+2O7Tric. 1 : P1
4.BB.JianmuiteZrTi4+Ti3+5Al3O16Tet. 4 : I4
4.BB.05ChromiteFe2+Cr3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05CochromiteCoCr2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05CoulsoniteFe2+V3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05CuprospinelCu2+Fe3+2O4Iso. m3m (4/m 3 2/m)
4.BB.05Filipstadite(Fe3+0.5Sb5+0.5)Mn2O4Iso.
4.BB.05FrankliniteZn2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05GahniteZnAl2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05GalaxiteMn2+Al2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05HercyniteFe2+Al2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05JacobsiteMn2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05ManganochromiteMn2+Cr2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05MagnesiocoulsoniteMgV2O4Iso. m3m (4/m 3 2/m)
4.BB.05MagnesiochromiteMgCr2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05MagnesioferriteMgFe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05MagnetiteFe2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05Nichromite(Ni,Co,Fe)(Cr,Fe,Al)2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05Qandilite(Mg,Fe3+)2(Ti,Fe3+,Al)O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05SpinelMgAl2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05TrevoriteNi2+Fe3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05UlvöspinelTiFe2+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05VuorelaineniteMn2+V3+2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05ZincochromiteZnCr2O4Iso. m3m (4/m 3 2/m) : Fd3m
4.BB.05HarmuniteCaFe2O4Orth. mmm (2/m 2/m 2/m) : Pbcm
4.BB.05WernerkrauseiteCa(Fe3+,Mn3+)2Mn4+O6Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.05Deltalumite(Al0.670.33)Al2O4Tet. 4 2m : P4m2
4.BB.05GuiteCo2+Co3+2O4Iso.
4.BB.10HausmanniteMn2+Mn3+2O4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
4.BB.10HetaeroliteZnMn2O4Tet. 4/mmm (4/m 2/m 2/m) : I41/amd
4.BB.10Manganostibite(Mn,Fe)7SbAsO12Orth. mmm (2/m 2/m 2/m)
4.BB.15Maghemite(Fe3+0.670.33)Fe3+2O4Iso. 4 3 2 : P41 3 2
4.BB.15Titanomaghemite(Ti4+0.50.5)Fe3+2O4Iso. 4 3 2 : P43 3 2
4.BB.20Tegengrenite(Mn3+0.5Sb5+0.5)Mg2O4Trig. 3 : R3
4.BB.30CarmeltaziteZrAl2Ti4O11Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.35FeiiteFe2+2(Fe2+Ti4+)O5Orth. mmm (2/m 2/m 2/m) : Cmcm
4.BB.40MaohokiteMgFe2O4Orth. mmm (2/m 2/m 2/m) : Pnma
4.BB.45Tschaunerite (Fe2+)(Fe2+Ti4+)O4Orth. mmm (2/m 2/m 2/m) : Cmcm

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for XieiteHide

References for XieiteHide

Localities for XieiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Antarctica
 
  • Eastern Antarctica
    • Queen Maud Land
      • Queen Fabiola Mts
Kato et al. (2017)
Brazil
 
  • Mato Grosso
    • Juína
      • Sorriso river
Kaminski et al. (2017) +1 other reference
China (TL)
 
  • Hubei
    • Suizhou
      • Zengdu District
        • Xihe
Chen et al. (2003) +4 other references
 
and/or  
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