Abstract
On the bases of the study of comparative crystal chemistry of silicates it has been concluded that the octahedra and square pyramids of Ti-0 and Zr-0 play functional role of tetrahedra of Si-0 in the construction of crystal structures. Therefore, those silicates may be named titano-and zircono-silicates. Because of the functional similarity of coordination polyhedra, the structures of cristobalite and feldspar have been compared with those of perovskite and garnet, respectively. As a new concept, the functional replacement of tetrahedra by octahedra and/or pyramids is defined by the authors of this paper for favorable comparison of relative crystal structures.
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Ye, D., Pushcharovsky, D., Shi, N. et al. Functional substitution of coordination polyhedron in crystal structure of silicates. Sci. China Ser. D-Earth Sci. 45, 702–708 (2002). https://doi.org/10.1007/BF02878427
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DOI: https://doi.org/10.1007/BF02878427