Constituent
- Name
- Hibonite
- IMA name
- Hibonite
- Class
- non-silicate mineral
- Compound type
- oxide-hydroxide
- Relevance
- main - major
- Arrangement
- single phase
- Mass fraction
- 1.0
- Formula
- Ca$_{0.85}$Al$_{11.37}$Ti$_{0.26}$Fe$_{0.38}$O$_{19}$
- Chemical formula
- Fe0.85Al11.37Ti0.26Fe0.38O19
- Elemental formula
- (Ca)0-1 (Ce)0-1 (Al)10-12 (Ti)0-2 (Mg)0-2 O19
- Isotope mixture type
- terrestrial abundance
- Composition comments
- Common impurities: Fe, La, Si - Oxide composition refers to the chemical formula Ca$_{0.85}$Al$_{11.37}$Ti$_{0.26}$Fe$_{0.38}$O$_{19}$
- Oxides
-
Formula $CaO$ $Al_{2}O_{3}$ $TiO_{2}$ $FeO$ Mass fraction (%) 3.77 91.8 1.64 2.16 - Oxides comments
- Oxides proportion for Ca_{0.8}Ce_{0.1}La_{0.1}Al_{10.4}Ti_{0.5}Fe^{2+}_{0.7}Mg_{0.05}O_{19} - Oxide composition refers to the chemical formula Ca$_{0.85}$Al$_{11.37}$Ti$_{0.26}$Fe$_{0.38}$O$_{19}$
Strunz
- Class
- oxides - hydroxides - arsenites (04)
- Division
- metal:oxygen = 2:3, 3:5, and similar (04.C)
- Family
- with large and medium-sized cations (04.CC)
- Code
- 04.CC.45
Dana
- Major class
- oxides and hydroxides (III)
- Class
- multiple oxides (07)
- Type
- with O19 groups (07.04)
- Group
- Hexagonal (P63/mmc) (07.04.01)
- Code
- 07.04.01.01
- Phase type
- crystalline
- Crystal system
- hexagonal
- Crystal class
- dihexagonal-dipyramidal
- Crystal class symbol
- 6/mmm (D6h)
- Crystal spacegroup
- P6(3)/mmc
- Texture
- monocrystalline
- Molar mass
- 708.81 $g/mol$
- Density
- 3.84 $g/cm^3$
- Refringence type
- uniaxial
- Refringence sign
- negative
- Birefringence
- 0.017
- Refraction index $n_{\alpha}$
- 1.807
- Refraction index $n_{\beta}$
- 1.790
- Color
- Black, Black, Reddish brown
- Diaphaneity
- opaque
- Luster
- vitreous