The crystal-chemistry of high-aluminium titanites

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

doi:10.1127/ejm/3/5/0777

The crystal-chemistry of high-aluminium titanites

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

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104 Scopus citations

Abstract

A crystal-chemical study of "high-aluminium titanites', where X_Al=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 language	English
Pages (from-to)	777-792
Number of pages	16
Journal	European Journal of Mineralogy
Volume	3
Issue number	5
DOIs	https://doi.org/10.1127/ejm/3/5/0777
State	Published - 1991
Externally published	Yes

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author = "R. Oberti and Smith, {D. C.} and G. Rossi and F. Caucia",

year = "1991",

doi = "10.1127/ejm/3/5/0777",

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T1 - The crystal-chemistry of high-aluminium titanites

AU - Oberti, R.

AU - Smith, D. C.

AU - Rossi, G.

AU - Caucia, F.

PY - 1991

Y1 - 1991

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AB - 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

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JO - European Journal of Mineralogy

JF - European Journal of Mineralogy

SN - 0935-1221

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ER -

The crystal-chemistry of high-aluminium titanites

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