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
- $(Ca,Ce)(Al,Ti,Mg)_{12}O_{19}$
- Chemical formula
- (Ca,Ce)(Al,Ti,Mg)12O19
- Elemental formula
- (Mg)0.46-2 (Ca)0.748-1 (Al)10.722-12 O19 Si0.07 (Ti)0.407-2 Fe0.328 Zn0.021 La0.029 (Ce)0.105-1 Th0.021
- Isotope mixture type
- terrestrial abundance
- Composition comments
- Common impurities: Fe, La, Si
- Oxides
-
Formula $Fe_{2}O_{3}$ $SiO_{2}$ $TiO_{2}$ $MgO$ $CaO$ $Al_{2}O_{3}$ $ZnO$ $Ce_{2}O_{3}$ $La_{2}O_{3}$ $ThO_{2}$ Mass fraction (%) 3.75 0.6 4.65 2.65 6.0 78.19 0.24 2.47 0.67 0.78 - 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}
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
- Molar mass
- 709.93 $g/mol$
- 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