Mineral phase
IMA name
Coulsonite
IMA Code
Cou
Type
Class
non-silicate mineral
Compound type
oxide
Chemical composition
Formula
$Fe^{2+}V^{3+}_2O_4$
Chemical formula
FeV2O4
Elemental formula
(Fe2+) (V3+)2 O4
Isotope mixture type
terrestrial abundance
  Formula Name Family Number min-max Isotope mole fraction State Relevance
$Fe^{2+}$ Iron(II) cation element 1 constituent cation main
$V^{3+}$ Vanadium(III) cation element 2 constituent cation main
$O$ Oxygen element 4 constituent element main
Oxides
Formula $V_{2}O_{3}$ $FeO$
Mass fraction (%) 67.6 32.4

Strunz

Class
oxides - hydroxides - arsenites (04)
Division
metal:oxygen = 3:4 and similar (04.B)
Family
with only medium-sized cations (04.BB)
Code
04.BB.05

Dana

Major class
oxides and hydroxides (III)
Class
multiple oxides (07)
Type
(A+B++)2X4 Spinel group (07.02)
Group
Vanadium subgroup (07.02.04)
Code
07.02.04.02
Phase type
crystalline
Crystal system
isometric (cubic)
Crystal class
hexoctahedral
Crystal class symbol
m-3m (Oh)
Crystal spacegroup
Fd-3m
Molar mass
221.73 $g/mol$
Density
5.17 - 5.2 $g/cm^3$
State NTP
solid
Refringence type
isotropic
Refraction index $n_{\alpha}$
2.29 - from gladstone-dale relationship
Color
blue gray
Diaphaneity
opaque
Luster
metallic
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