Wustite Mineral Data

Wustite Mineral Data +

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General Wustite Information

Chemical Formula:

FeO

Composition:

Molecular Weight = 71.85 gm

Iron 77.73 % Fe 100.00 % FeO

Oxygen 22.27 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Fe²⁺O

Environment:

Formed as an alteration product of other iron-bearing minerals at high temperatures in a highly reducing environment; in highly-reduced iron-bearing basalts; as inclusions in diamonds in kimberlites; in precipitates from deep-sea hot brines and in Fe-Mn nodules; in microspherules of likely extraterrestrial origin found in a variety of geological environments; in some meteorites

IMA Status:

Valid Species (Pre-IMA) 1927

Locality:

At Scharnhausen, near Stuttgart, Baden-Wurttemberg, and at Buhl, near Weimar, Hesse, Germany. In Greenland, on Disko Island, near Uivfaq and Kitdlit. From the Pathardih colliery, Jharia coalfield, Bihar, India. In a number of diamond-bearing kimberlite pipes. Link to MinDat.org Location Data.

Name Origin:

Named for Ewald Wüst (1875-1934), German metallurgist and Director for Iron Research of the Kaiser Wilhelm Institute, Dusseldorf, Germany who first synthesized the compound.

Synonym:

Wuestite

Wustite Image

Images:

Wustite

Comments: Orange botryoidal wustite on green calcite.
Location: Zacatecas, Mexico. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Wustite Crystallography

Cell Dimensions:

a = 4.296, Z = 4; V = 79.29 Den(Calc)= 6.02

Crystal System:

Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: F m3m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.146(1), 1.518(0.8), 2.476(0.7),

Crystal Structure:

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Fjellvag H , Hauback B C , Vogt T , Stolen S , American Mineralogist , 87 (2002) p.347-349, Monoclinic nearly stoichiometric wustite at low temperatures, Sample: BNL, T = 10 K

View Additional jPOWD Structure files for Wustite
[1] [2] [3] [4] [5] [6]

Physical Properties of Wustite

Color:

Gray.

Density:

5.88

Diaphaniety:

Transparent to Translucent

Hardness:

5-5.5 - Apatite-Knife Blade

Luster:

Vitreous (Glassy)

Optical Properties of Wustite

Optical Data:

NCalc= 2.13 - from Gladstone-Dale relationship (KC = 0.188) where Ncalc=Dcalc*KC+1
NCalc= 2.11 - from Gladstone-Dale relationship (KC = 0.188) where Ncalc=Dmeas*KC+1

Calculated Properties of Wustite

Electron Density:

r_electron=5.70 gm/cc
note: r_Wustite=6.02 gm/cc.

Fermion Index

Fermion Index = 0.01658
Boson Index = 0.98342

Photoelectric:

PE_Wustite= 23.84 barns/electron
U=PE_Wustite x r_electron= 135.82 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Wustite is Not Radioactive

Wustite Classification

Dana Class:

4.2.1.6 (4)Simple Oxides

(4.2)with a cation charge of 2+ (A++ O)

(4.2.1)Periclase group (Isometric, Fm3m)

4.2.1.1 Periclase MgO F m3m 4/m 3 2/m

4.2.1.2 Bunsenite NiO F m3m 4/m 3 2/m

4.2.1.3 Manganosite MnO F m3m 4/m 3 2/m

4.2.1.4 Monteponite CdO F m3m 4/m 3 2/m

4.2.1.5 Lime CaO F m3m 4/m 3 2/m

4.2.1.6 Wustite FeO F m3m 4/m 3 2/m

4.2.1.7 Hongquiite* TiO F m3m 4/m 3 2/m

Strunz Class:

IV/A.04-20 IV - Oxides

IV/A - Oxides with metal : oxygen = 1:1 and 2:1 (M2O,MO)

IV/A.04 - Periclase Group, Periclase - Murdochite series

IV/A.04-10 Periclase MgO F m3m 4/m 3 2/m

IV/A.04-20 Wustite FeO F m3m 4/m 3 2/m

IV/A.04-30 Bunsenite NiO F m3m 4/m 3 2/m

IV/A.04-40 Manganosite MnO F m3m 4/m 3 2/m

IV/A.04-50 Monteponite CdO F m3m 4/m 3 2/m

IV/A.04-60 Lime CaO F m3m 4/m 3 2/m

IV/A.04-70 Murdochite PbCu6O8-x(Cl,Br)2x F m3m 4/m 3 2/m

Other Wustite Information

References:

NAME( Athena) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)

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Wustite

FeO
Dana No: 4.2.1.6 Strunz No: IV/A.04-20
Locality:

Notes: