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Difference between revisions of "Reflection twin"

From Online Dictionary of Crystallography

(Tidied translations and added German and Spanish (U. Mueller))
 
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<Font color="black"> Geminato per riflessione </Font>(''It'')
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<font color="blue">Macle par reflexion</font> (''Fr''). <font color="red">Ebenenzwilling, Reflektionszwilling</font> (''Ge''). <font color="black">Geminato per riflessione</font> (''It''). <font color="green">Macla de reflexión</font> (''Sp'').
  
  
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Two domains of one crystal form a ''reflection [[twin]]'' when the [[twin operation]] is a reflection across a lattice plane  (''twin plane'').
  
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1. Rational twin mirror plane normal to an irrational line. This lattice plane is common to both twin partners.
  
Two crystals forming a ''[[twin]]'' are symmetrically related by a reflection plane (''twin plane'').
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2. Irrational twin mirror plane normal to a rational lattice row. This lattice row [''uvw''] is common to both twin partners.
  
 
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[[Category:Twinning]]
[[Category:Fundamental crystallography]]
 

Latest revision as of 16:55, 17 November 2017

Macle par reflexion (Fr). Ebenenzwilling, Reflektionszwilling (Ge). Geminato per riflessione (It). Macla de reflexión (Sp).


Two domains of one crystal form a reflection twin when the twin operation is a reflection across a lattice plane (twin plane).

1. Rational twin mirror plane normal to an irrational line. This lattice plane is common to both twin partners.

2. Irrational twin mirror plane normal to a rational lattice row. This lattice row [uvw] is common to both twin partners.