Electron microscopy
 
Pmma (51) Space Group
- Practical Electron Microscopy and Database -
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Table 1641. Pmma (51) space group.

Name in the International Tables for Crystallography
Pmma P
47 mmm
Crystal system
Orthorhombic mmm
Asymm
0 ≤ x ≤ 1/4 and 0 ≤ y ≤ 1/2 and 0 ≤ z ≤ 1
8 Absence of reflections

 

Translation
 
Symmetry (atomic coordinates)
X, Y, Z; 1/2-X, -Y, Z; -X, Y, -Z; 1/2+X, -Y, -Z; -X, -Y, -Z; 1/2+X, Y, -Z; X, -Y, Z; 1/2-X, Y, Z
Crystal examples
 

 

 

 

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