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Xieite

Collectors Summary

Crystal System orthorhombisch, Bbmm

Chemism

Chem­ical formula

FeCr2O4

Chem­ical com­po­si­tion

Chrom, Eisen, Sauerstoff

Unit weight: 223.83524 u; Number of atoms in the formula: 7

Info

Empirical formula:

FeCr2O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

28.59

4

57.14

15.9994300

63.9977200

Chromium

Cr

46.46

2

28.57

51.9961600

103.9923200

Iron

Fe

24.95

1

14.29

55.8452000

55.8452000

Anal­y­sis wt%

Cr2O3 : 67.90, FeO : 32.10 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

4.BB.05

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
B: Metall: Sauerstoff = 3:4 und vergleichbare
B: Mit ausschließlich mittelgroßen [Kationen]
05:Spinel-Gruppe

Lapis Clas­sifica­tion

IV/B.05-025

IV: OXIDE
B: Oxide mit Verhältnis Metall zu Sauerstoff = 3:4 (Spinelltyp M3O4 und verwandte Verbindungen)

Clas­sifica­tion by Hölzel

4.BC.200

4: OXIDES
B: Spinels R3O4
C: Cr-Spinels

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Marokite supergroup

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mmm

Space Group number

63

Space Group

Bbmm

Cell param­e­ters a (Å)

9.462

Cell param­e­ters b (Å)

9.562

Cell param­e­ters c (Å)

2.916

Cell param­e­ters a/b or c/a

0.990

Cell param­e­ters c/b

0.305

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

263.827

X-Ray Pow­der Diffrac­tion

2.650(100), 2.389(20), 2.089(10), 1.953(90), 1.566(60), 1.439(15), 1.425(15), 1.337(40)

XRD chart Xieite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

5.34 ber.

5.635 ( ρ calc. Mineralienatlas )

Preface

Name from

Professor Xie Xiande (Guangzhou Institut of Geochemie (GIG), Academia Sinica, China und Präsident der IMA von 1990-94)

Author (Name, Year)

Ming Chen, 2007

References

Neue Mineralien - IMA-WEB-Seite, Feb. 2008
Mineralien Welt 06/09, Steffen Jahn, Neue Mineralien

IMA group assignments

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Xieite

FeCr2O4

orthorhombisch : mmm : Bbmm

4.BB.05

Gahnite

ZnAl2O4

kubisch : m3m : Fd3m

4.BB.05

Chromite

Fe2+Cr2O4

kubisch : m3m : Fd3m

4.BB.05

Galaxite

(Mn,Fe2+,Mg)(Al,Fe3+)2O4

kubisch : m3m : Fd3m

4.BB.05

Spinel

MgAl2O4

kubisch : m3m : Fd3m

4.BB.05

Hercynite

Fe2+Al2O4

kubisch : m3m : Fd3m

4.BB.05

Jacobsite

(Mn2+,Fe2+,Mg)(Fe3+,Mn3+)2O4

kubisch : m3m : Fd3m

4.BB.05

Magnetite

Fe2+Fe23+O4

kubisch : m3m : Fd3m

4.BB.05

Qandilite

(Mg,Fe2+)2(Ti,Fe3+,Al)O4

kubisch : m3m : Fd3m

4.BB.05

Trevorite

NiFe23+O4

kubisch : m3m : Fd3m

4.BB.05

Cochromite

(Co,Ni,Fe2+)(Cr,Al)2O4

kubisch : m3m : Fd3m

4.BB.05

Coulsonite

Fe2+V23+O4

kubisch : m3m : Fd3m

4.BB.05

'Nichromite'

(Ni,Co,Fe2+)(Cr,Fe3+,Al)2O4

kubisch : m3m : Fd3m

4.BB.05

Franklinite

(Zn,Mn2+,Fe2+)(Fe3+,Mn3+)2O4

kubisch : m3m : Fd3m

4.BB.05

Filipstadite

(Mn2+,Mg)2(Fe3+0.5Sb5+0.5)O4

kubisch : m3m : Fd3m

4.BB.05

Tegengrenite

(Mg,Mn2+)2(Sb5+,Mn3+)O4

trigonal : 3, 3 : R3, R3

4.BB.05

Cuprospinel

(Cu,Mg)Fe23+O4

kubisch : m3m : Fd3m

4.BB.05

Ulvöspinel

TiFe22+O4

kubisch : m3m : Fd3m

4.BB.05

Zincochromite

ZnCr2O4

kubisch : m3m : Fd3m

4.BB.05

Vuorelainenite

(Mn2+,Fe2+)(V3+,Cr3+)2O4

kubisch : m3m : Fd3m

4.BB.05

Magnesioferrite

MgFe23+O4

kubisch : m3m : Fd3m

4.BB.05

Manganochromite

(Mn,Fe2+)(Cr,V)2O4

kubisch : m3m : Fd3m

4.BB.05

Magnesiochromite

MgCr2O4

kubisch : m3m : Fd3m

4.BB.05

Magnesiocoulsonite

MgV23+O4

kubisch : m3m : Fd3m

4.BB.05

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Hausmannite

Mn2+Mn23+O4

tetragonal : 4/mmm : I41/amd

IV/B.05-010

Iwakiite

Mn2+(Fe3+,Mn3+)2O4

tetragonal : 4/mmm : I41/amd

IV/B.05-020

Xieite

FeCr2O4

orthorhombisch : mmm : Bbmm

IV/B.05-025

Hetaerolite

ZnMn23+O4

tetragonal : 4/mmm : I41/amd

IV/B.05-040

'Hydrohetaerolite'

HZnMn3+1.7O4

tetragonal : 4/mmm : I41/amd

IV/B.05-050

Harmunite

CaFe2O4

orthorhombisch : mmm : Pnma

IV/B.05-058

Marokite

CaMn23+O4

orthorhombisch : mmm, mm2 : Pmab, P21ab

IV/B.05-060

Tegengrenite

(Mg,Mn2+)2(Sb5+,Mn3+)O4

trigonal : 3, 3 : R3, R3

IV/B.05-065

Filipstadite

(Mn2+,Mg)2(Fe3+0.5Sb5+0.5)O4

kubisch : m3m : Fd3m

IV/B.05-070

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Xieite

FeCr2O4

orthorhombisch : mmm : Bbmm

4.BC.200

CNMNC (IMA)-Number

IMA 2007-056

CNMNC symbol

Symbol

Xi

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