Constituent
- Name
- TiO2
- IMA name
- Anatase
- Class
- non-silicate mineral
- Compound type
- oxide-hydroxide
- Comments
- Anatase or other TiO2 minerals
- Relevance
- main - major
- Arrangement
- homogeneous in multi-phases
- Formula
- $TiO_2$
- Chemical formula
- TiO2
- Elemental formula
- Ti O2
- Isotope mixture type
- terrestrial abundance
- Oxides
-
Formula $TiO_{2}$ Mass fraction (%) 100.0
Strunz
- Class
- oxides - hydroxides - arsenites (04)
- Division
- metal:oxygen = 1:2 and similar (04.D)
- Family
- with medium-sized cations; frameworks of edge-sharing octahedra (04.DD)
- Code
- 04.DD.05
Dana
- Major class
- oxides and hydroxides (III)
- Class
- simple oxides (04)
- Type
- with a cation charge of 4+ (A++++O2) (04.04)
- Group
- -Anatase- group (04.04.04)
- Code
- 04.04.04.01
- Phase type
- crystalline
- Crystal system
- tetragonal
- Crystal class
- ditetragonal-dipyramidal
- Crystal class symbol
- 4/mmm (D4h)
- Crystal spacegroup
- I4(1)/amd
- Molar mass
- 79.88 $g/mol$
- Density
- 3.9 $g/cm^3$
- Refringence type
- uniaxial
- Refringence sign
- negative
- Birefringence
- 0.073
- Refraction index $n_{\alpha}$
- 2.561
- Refraction index $n_{\beta}$
- 2.488
- Color
- nearly colorless (rare), pale yellow, pale green, pale lilac, yellowish brown, dark blue, reddish brown, brown, gray, black
- Diaphaneity
- transparent to translucent
- Luster
- adamantine