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Atomic bonds Coesite

The deformation density peaks in the Si—O bonds of coesite are located away from the midpoint of the bond towards the oxygen atom, and also tend to be displaced towards the interior of the SiOSi angle. Downs reports a bending of the... [Pg.254]

Stishovite is the most dense phase of silica. Its density is 4.35 g/cm. It has a rutde-type crystal structure in which the sdicon atom is octahedrally surrounded by six oxygen atoms. Four Si—O bonds are 1.76A and two 1.8lA. Stishovite has been prepared similarly to coesite but at temperatures between 1,200 to 1,400°C and a pressure above 150,000 atm. Both the coesite and stishovite are found in nature in certain meteorite craters resulting from meteorite impacts. [Pg.824]

See other pages where Atomic bonds Coesite is mentioned: [Pg.165]    [Pg.205]    [Pg.254]    [Pg.255]    [Pg.111]    [Pg.114]    [Pg.115]    [Pg.170]    [Pg.62]    [Pg.22]    [Pg.175]    [Pg.184]    [Pg.15]    [Pg.177]    [Pg.2]    [Pg.162]    [Pg.164]    [Pg.168]    [Pg.168]    [Pg.175]    [Pg.176]    [Pg.70]    [Pg.347]    [Pg.361]    [Pg.371]    [Pg.371]    [Pg.374]    [Pg.31]    [Pg.608]    [Pg.111]    [Pg.114]    [Pg.115]   
See also in sourсe #XX -- [ Pg.75 ]



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