Mineral Factbook

Hibonite

Ca[Al12]O19IMA symbol: Hbnredefined

Hibonite is an oxide or hydroxide mineral with the formula Ca[Al12]O19. It has a calculated density of 3.796 g/cm3. Its streak is brown.

Photos

Hibonite specimen photo
Didier Descouens · CC BY-SA 4.0 · Commons
Hibonite specimen photo
Didier Descouens · CC BY-SA 3.0 · Commons
Hibonite specimen photo
Krüger, B., Galuskin, E. V., Galuskina, I. O., Krüger, H., and Vapnik, Y. · CC BY 4.0 · Commons
Hibonite specimen photo
Robert M. Lavinsky · CC BY-SA 3.0 · Commons

Crystallography

Space groupP 63/m m c
Cell (Å, °)a = 5.613, b = 5.613, c = 22.285; α = 90, β = 90, γ = 120
Cell volume608.042 ų, Z = 2
Axial ratios1.0000:1:3.9702calculated from COD 9004447
Source structureCOD 9004447 (The Canadian Mineralogist, 1996)

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)2.6632.5061.4032.1341.5562.807
I/I₀10094.183.467.265.452.4

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9004447; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)3.796 g/cm³calculated from COD 9004447
Streak
brownsingle sourceWikidata (CC0)

Chemistry (calculated)

Molecular weight667.85 g/molcalculated from the IMA formula
Composition (wt%)Ca 6%, Al 48.48%, O 45.52%

Classification

Nickel-Strunz (10th)4.CC.45Wikidata (CC0)
Nickel-Strunz (9th)4.CC.45Wikidata (CC0)