Constituent Rutile | SSHADE

Constituent

Name: Rutile
IMA name: Rutile

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

Constituent abundance in material

Relevance: main - major
Arrangement: single phase
Mass fraction: 1.0

Chemical composition

Formula: Ti $_{0.984}$ V $_{0.008}$ Fe $_{0.008}$ O $_{2}$
Chemical formula: Ti0.984 V0.008 Fe0.008 O2
Elemental formula: (Ti)0-1 (O)0-2
Isotope mixture type: terrestrial abundance

	Formula	Name	Family	Number min-max	Isotope mole fraction	State	Relevance
	$Ti$	Titanium	element	0 - 1	1.0	constituent element	main
	$V^{5+}$	Vanadium(V) cation	element	0 - 1	1.0	constituent element	impurity
	$Fe^{2+}$	Iron(II) cation	element	0 - 1	1.0	constituent element	impurity
	$O$	Oxygen	element	0 - 2	1.0	constituent element	main

Composition comments: The natural rutile sample has a small (>1 %) OH content that is not shown in the formula of the chemical composition.

Oxides composition

Oxides

Formula	$TiO_{2}$	$V_{2}O_{5}$	$FeO$
Mass fraction (%)	97.16	1.43	1.41

Classifications

Strunz

Class: oxides - hydroxides - arsenites (04)
Division: metal:oxygen = 1:2 and similar (04.D)
Family: with medium-sized cations; chains of edge-sharing octahedra (04.DB)
Code: 04.DB.05

Dana

Major class: oxides and hydroxides (III)
Class: simple oxides (04)
Type: with a cation charge of 4+ (A++++O2) (04.04)
Group: Rutile group (Tetragonal: P4/mnm) (04.04.01)
Code: 04.04.01.01

Phase type: crystalline

Crystallography

Crystal system: tetragonal
Crystal class: ditetragonal-dipyramidal
Crystal class symbol: 4/mmm (D4h)
Crystal spacegroup: P4(2)/mnm

Physical properties

Molar mass: 79.88 $g/mol$
Density: 4.25 $g/cm^3$

Optical properties

Refringence type: uniaxial
Refringence sign: positive
Birefringence: 0.287 - 0.294
Refraction index $n_{\alpha}$: 2.605 - 2.621
Refraction index $n_{\beta}$: 2.899 - 2.908
Color: reddish brown
Diaphaneity: transparent to opaque
Luster: adamantine