Difference between revisions of "Ogdohedry"
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− | <font color="blue">Ogdoédrie </font>(''Fr''). <Font color="green"> Ogdoedria </Font>(''Sp''). | + | <font color="blue">Ogdoédrie </font>(''Fr''). <Font color="green"> Ogdoedria </Font>(''Sp''). <Font color="black"> Ogdoedria </Font>(''It'') |
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== Definition == | == Definition == |
Revision as of 14:20, 21 April 2006
Ogdoédrie (Fr). Ogdoedria (Sp). Ogdoedria (It)
Definition
The point group of a crystal is called ogdohedry if it is a subgroup of index 8 of the point group of its lattice.
See also
Section 9.1 of International Tables of Crystallography, Volume A