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Difference between revisions of "Holohedry"

From Online Dictionary of Crystallography

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(Tidied translations and added German (U. Mueller))
 
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<font color="blue">Holoédrie </font>(''Fr''). <Font color="green"> Holedria </Font>(''Sp''). <Font color="black"> Oloedria </Font>(''It''). <Font color="purple"> 完面像 </Font>(''Ja'')
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<font color="blue">Holoédrie</font> (''Fr''). <font color="red">Holoedrie</font> (''Ge''). <font color="black">Oloedria</font>(''It''). <font color="purple">完面像</font>(''Ja''). <font color="green">Holoedría</font> (''Sp'').
  
  
 
== Definition ==
 
== Definition ==
  
The [[point group]] of a crystal is called holohedry if it is identical to the point group of its lattice. In the three-dimensional space, there are seven holohedral [[geometric crystal class]]es: <math> {\bar 1}, 2/m, mmm, {\bar 3}m, 4/m mm, 6/m mm, m{\bar 3}m</math>
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The [[point group]] of a crystal is called '''holohedral''' if it is identical to the point group of its [[lattice]]. The corresponding [[geometric crystal class]] is called a '''holohedry'''. In the three-dimensional space, there are seven holohedries: <math> {\bar 1}, 2/m, mmm, {\bar 3}m, 4/m mm, 6/m mm, m{\bar 3}m</math>.
  
 
== See also ==
 
== See also ==
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*Chapter 3.2.1.1 of ''International Tables for Crystallography, Volume A'', 6th edition
  
Section 9.1 of ''International Tables of Crystallography, Volume A''
 
  
 
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[[Category:Fundamental crystallography]]
[[Category:Fundamental crystallography]]<br>
 
 
[[Category:Morphological crystallography]]
 
[[Category:Morphological crystallography]]

Latest revision as of 09:45, 14 November 2017

Holoédrie (Fr). Holoedrie (Ge). Oloedria(It). 完面像(Ja). Holoedría (Sp).


Definition

The point group of a crystal is called holohedral if it is identical to the point group of its lattice. The corresponding geometric crystal class is called a holohedry. In the three-dimensional space, there are seven holohedries: [math] {\bar 1}, 2/m, mmm, {\bar 3}m, 4/m mm, 6/m mm, m{\bar 3}m[/math].

See also

  • Chapter 3.2.1.1 of International Tables for Crystallography, Volume A, 6th edition