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Karrooite

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Formula:
MgTi2O5
Crystal System:
Orthorhombic
A synthetic compound. MgTi2O5 with the structure of pseudobrookite. A component in orthorhombic oxide solid solutions, R2+Ti2O5-R3+2TiO5, which are present as accessory minerals in lunar and terrestrial rocks.

The name "karrooite" was first proposed by von Knorring & Cox (1961) for the synthetic product MgTi2O5.


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Chemical Properties of KarrooiteHide

Formula:
MgTi2O5

Crystallography of KarrooiteHide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Cmcm
Cell Parameters:
a = 3.7385 Å, b = 9.7187 Å, c = 10.0025 Å
α = 90°, β = 90°, γ = 90°
Ratio:
a:b:c = 0.385 : 1 : 1.029
Unit Cell V:
363.42 ų (Calculated from Unit Cell)

Synonyms of KarrooiteHide

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for KarrooiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
von Knorring, O. & Cox, K. W. (1961): Kennedyite, a new mineral of the pseudobrookite series. Mineral. Mag. 32, 676-682.
Xirouchakis, D., Smirnov, A., Woody, K., Lindsley, D.H., and Andersen, D.J. (1992) Thermodynamics and stability of pseudobrookite-type MgTi2O5 (karrooite). American Mineralogist: 87: 658-667.
Yang, H. and Hazen, R.M. (1998) Crystal chemistry of cation order-disorder in pseudobrookite-type MgTi2O5. Journal of Solid State Chemistry: 138: 238-244.
Liermann, H.-P., Downs, R.T., Yang, H. (2006) Site disorder revealed through Raman spectra from oriented single crystals: A case study on karooite (MgTi2O5). Am. Mineral. 91, 790-793.

Internet Links for KarrooiteHide

Mineral and/or Locality  
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