Wüstite
Wüstite (FeO) is a mineral form of iron(II) oxide found with meteorites and native iron. It has a grey colour with a greenish tint in reflected light. Wüstite crystallizes in the isometric-hexoctahedral crystal system in opaque to translucent metallic grains. It has a Mohs hardness of 5 to 5.5 and a specific gravity of 5.88. Wüstite is a typical example of a non-stoichiometric compound.

Wüstite was named for Fritz Wüst (1860–1938), a German metallurgist and founding director of the "Kaiser-Wilhelm-Institut für Eisenforschung" (presently Max Planck Institute for Iron Research GmbH).

In addition to its type locality in Germany, it has been reported from Disko Island, Greenland; the Jharia coalfield, Jharkhand, India; and as inclusions in diamonds in a number of kimberlite pipes. It also is reported from deep sea manganese nodules.

Its presence indicates a highly reducing environment.
Q677
Fe
Concept
Q629
O
Concept
Q196680
iron(II) oxide
Concept
Q60186
meteorite
Concept
Q2248028
native iron
Concept
Q9128
light
Concept
Q473227
isometric-hexoctahedral
Concept
Q41472
Mohs hardness
Concept
Q11027905
specific gravity
Concept
Q899734
non-stoichiometric compound
Concept
None
Fritz Wüst
UNK
Q11467
metallurgist
Concept
Q881977
Max Planck Institute for Iron Research GmbH
LOC
Q1973416
type locality
Concept
Q1228827
Disko Island
LOC
Q12429699
Jharia
LOC
Q1184
Jharkhand
LOC
Q5283
diamond
Concept
Q204376
kimberlite
Concept
Q939579
manganese nodule
Concept
Q7306351
reducing environment
Concept
Q415889
Wüstite
Concept
Q415889
Wüstite
Concept
Q415889
Wüstite
Concept
Q415889
Wüstite
Concept
+5^^http://www.w3.org/2001/XMLSchema#decimal
5
NUMBER
+5.5^^http://www.w3.org/2001/XMLSchema#decimal
5.5
NUMBER
+5.88^^http://www.w3.org/2001/XMLSchema#decimal
5.88
NUMBER
+1860^^http://www.w3.org/2001/XMLSchema#decimal
1860
NUMBER
+1938^^http://www.w3.org/2001/XMLSchema#decimal
1938
NUMBER
subclass of
crystal system
part of
part of