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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.05-055

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

Volume (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


 
 
FeCr2O4
orthorhombisch
Pnma

 
 
CaCr2O4
orthorhombisch
Pnma

 
 
CaFe2O4
orthorhombisch
Pnma

 
 
CaMn23+O4
orthorhombisch
Pmab, P21ab

 
 
(Fe2+)(Fe2+Ti4+)O4
orthorhombisch
Cmcm

 
 
CaFe3+2Mn4+O6
orthorhombisch
Pnma

 
 
FeCr2O4
orthorhombisch
Bbmm

Refresh list

Actuality: 26. Mar 2024 - 03:52:27

Other languages

German

Xieit

English

Xieite

Simplified Chinese

谢氏超晶石

CNMNC (IMA)-Number

IMA 2007-056

CNMNC symbol

Symbol

Xi

Locations with GPS information

IDs

GUSID (Global unique identifier short form) dIizbUgop0-c1IrdK4wpwQ
GUID (Global unique identifier) 6DB38874-2848-4FA7-9CD4-8ADD2B8C29C1
Database ID 4870