Journal ArticleDOI
Crystal Chemistry, Synthesis and Characterization of Quartz Solid Solutions: A Review
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In this paper, various high and low-quartz solid solutions (stuffed derivatives of quartz) are enumerated; their crystal chemistry is discussed in terms of parameters like co-ordination, effective ionic radius and site preference of the candidate cations for such structures.Abstract:
The various high- and low-quartz solid solutions (stuffed derivatives of quartz) synthesized so far are enumerated; their crystal chemistry is discussed in terms of parameters like co-ordination, effective ionic radius and site preference of the candidate cations for such structures. Conditions of synthesis and stability/metastable persistence of these solid solutions are surveyed and their characteristic properties are summarized.read more
References
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Journal ArticleDOI
The thermodynamics of cation distributions in simple spinels
Alexandra Navrotsky,O.J. Kleppa +1 more
TL;DR: In this paper, the molar enthalpy of interchange of ions on tetrahedral sites with ions on octahedral sites was calculated from cation distribution data known at a single temperature for each spinel.
Journal ArticleDOI
The distribution of transition metal cations in spinels
TL;DR: In this paper, the authors applied crystal field theory in conjunction with spectroscopic data to give quantitatively the d-shell splitting and the resulting stabilization of a transition metal ion in a crystal site of given symmetry.