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More model informationStishovite model showing the tetragonal structure. Note that unlike the other silica polymorphs which are built with SiO4 tetrahedra, in stishovite silicon is coordinated with 6 oxygen anions in an octahedral arrangement. This forms a much denser structure in response to increased pressure.
This model was uploaded via a vrml export from the freeware Vesta. Data for albite were downloaded from the American Mineralogist Crystal Structure Database.
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