The crystal-chemistry of high-aluminium titanites

R. Oberti, D. C. Smith, G. Rossi, F. Caucia

Research output: Contribution to journalArticlepeer-review

110 Scopus citations


A crystal-chemical study of "high-aluminium titanites', where XAl=Al/(Al+Ti+Fe3+)≥0.25, has been made using single-crystal X-ray diffractometry on four samples from three different rock-types and localities. The first refinement of a natural pure CaTiOSiO4 titanite in the P21/a space group is also presented. All of the high-aluminium titanites studied have A2/a space group symmetry with linear trends between geometrical and chemical parameters. Increasing Al content provokes a strong contraction of the octahedral site geometry. -from Authors

Original languageEnglish
Pages (from-to)777-792
Number of pages16
JournalEuropean Journal of Mineralogy
Issue number5
StatePublished - 1991
Externally publishedYes


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