Constituent ilmenite | SSHADE

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Constituent

Name: ilmenite
IMA name: Ilmenite

Class: non-silicate mineral
Compound type: oxide-hydroxide

Constituent abundance in material

Relevance: main - major
Arrangement: heterogeneous in multi-phases
Mass fraction: 0.01
Abundance comments: 1% of ilmenite in the 90-150 microns fraction (Heiken and McKay, 1974)

Chemical composition

Formula: $Fe^{2+}TiO_3$
Chemical formula: (Fe2+)Ti03
Elemental formula: (Fe2+) Ti O3
Isotope mixture type: terrestrial abundance

	Formula	Name	Family	Number min-max	Isotope mole fraction	State	Relevance
	$Fe^{2+}$	Iron(II) cation	element	1		constituent element	main
	$Ti$	Titanium	element	1		constituent element	main
	$O$	Oxygen	element	3		constituent element	main

Composition comments: Common impurities: ?

Oxides composition

Oxides

Formula	$TiO_{2}$	$FeO$
Mass fraction (%)	52.65	47.35

Classifications

Strunz

Class: oxides - hydroxides - arsenites (04)
Division: metal:oxygen = 2:3, 3:5, and similar (04.C)
Family: with medium-sized cations (04.CB)
Code: 04.CB.05

Dana

Major class: oxides and hydroxides (III)
Class: simple oxides (04)
Type: with a cation charge of 3+ (A+++2O3) (04.03)
Group: Ilmenite group (04.03.05)
Code: 04.03.05.01

Phase type: crystalline

Crystallography

Crystal system: trigonal
Crystal class: rhombohedral
Crystal class symbol: -3 (S6)
Crystal spacegroup: R-3

Physical properties

Molar mass: 151.73 $g/mol$
Density: 4.72 $g/cm^3$

Optical properties

Refringence type: uniaxial
Refringence sign: negative
Refraction index $n_{\alpha}$: 2.4
Color: iron black, black
Diaphaneity: opaque
Luster: submetallic