Can Ti4+ Replace Si4+ in Silicates?

P. Hartman
Geologisch en Mineralogisch Instituut der Rijksuniversiteit, Garenmarkt 1B, Leiden, Netherlands

Summary: It is argued on crystal-chemical grounds that Si deficiency is compensated by the entering of Al, Fe3+, or Ti4+, in this order of preference, into tetrahedral sites. It is pointed out that Ti4+ occurs in tetrahedral coordination in exceptional circumstances only, while Fe3+ relatively easily takes a tetrahedral coordination.

Mineralogical Magazine; September 1969 v. 37; no. 287; p. 366-369; DOI: 10.1180/minmag.1969.037.287.09
© 1969, The Mineralogical Society
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