Mineral Factbook

Baddeleyite

ZrO2IMA symbol: Bdygrandfathered

Baddeleyite is an oxide or hydroxide mineral with the formula ZrO2, crystallizing in the monoclinic system. It has a Mohs hardness of 6.5, typically colorless, black, brown or yellow in color, with a greasy or metallic luster, a specific gravity of 5.5. Its streak is white.

Photos

Baddeleyite specimen photo
Ma, C.; Cámara, F.; Bindi, L.; Toledo, V.; Griffin, W.L. · CC BY 4.0 · Commons
Baddeleyite specimen photo
Orci · CC BY-SA 3.0 · Commons
Baddeleyite specimen photo
Ma, C.; Cámara, F.; Bindi, L.; Toledo, V.; Griffin, W.L. · CC BY 4.0 · Commons
Baddeleyite specimen photo
Perna, Maria Grazia and Zaccaria, Daria and Rosatelli, Gianluigi and Stoppani, Francesco Saverio and Curti, Ezio and Spratt, John and Humphreys-Williams, Emma and Najorka, Jens and Brownscombe, Will and Nestola, Fabrizio and Stoppa, Francesco · CC BY 4.0 · Commons

Crystallography

Crystal systemmonoclinic crystal systemWikidata (CC0)
Space groupP 1 21/c 1
Cell (Å, °)a = 5.145, b = 5.2075, c = 5.3107; α = 90, β = 99.23, γ = 90
Cell volume140.445 ų, Z = 4
Axial ratios0.9880:1:1.0198calculated from COD 9007485
Source structureCOD 9007485 (Acta Crystallographica, 1965) — 1 of 9 structures

Powder X-ray diffraction (calculated)

2θ (degrees, Cu Kα1)I/I₀ (max 100)
d (Å)3.1622.8391.8182.6211.8473.694
I/I₀10070.823.621.619.416.6

xrd-v1: CuKa1 1.5406A, 2theta 5-90, top10, Imax=100, no DW/PO. Computed from COD 9007485; idealized occupancies, no preferred orientation.

Physical properties

Density (calculated)5.828 g/cm³calculated from COD 9007485
Hardness (Mohs)
6.5single sourceDana's System, 1st Appendix (1899)
Specific gravity
5.5 g/cm3single sourceDana's System, 1st Appendix (1899)
Color
black, brown, colorless, yellowsingle sourceDana's System, 1st Appendix (1899)
Streak
whitesingle sourceWikidata (CC0)
whitesingle sourceDana's System, 1st Appendix (1899)
Luster
greasy, metallic, submetallic, vitreoussingle sourceDana's System, 1st Appendix (1899)

Chemistry (calculated)

Molecular weight123.22 g/molcalculated from the IMA formula
Composition (wt%)Zr 74.03%, O 25.97%

Classification

Nickel-Strunz (10th)4.DE.35Wikidata (CC0)
Nickel-Strunz (9th)4.DE.35Wikidata (CC0)