Database of Zeolite Structures
 
 
Framework Type FER
Framework
Cell parameters: orthorhombic I m m m (# 71)
    a = 19.0180 Å b = 14.3030 Å c = 7.5410 Å  
  α = 90.000° β = 90.000° γ = 90.000°  
Volume = 2051.3 Å3  
RDLS = 0.0036  
  Framework density (FDSi): 17.6 T/1000 Å3  
  Topological density: TD10 = 1021 TD = 0.887635  
Essential rings: [101·81·61·54]  
Channel dimensionality: Topological (pore opening > 6-ring): 2-dimensional  
  Maximum diameter of a sphere:  
  that can be included 6.31 Å  
that can diffuse along a:   1.56 Å b:   3.4 Å c:   4.69 Å  
Accessible volume: 10.01   %  
Secondary Building Units: 5-1          
Composite Building Units:
mor (t-tes )
fer
pcr (t-fer )
Natural Tiling t-dac-1 t-dac-2 t-fer t-tes
Framework images
(click on icon for larger image)
Viewed along [001]

Projection along [001]
viewed along [010]
Projection along [010]
projection along [100]
10-ring channel along z
cage
Shear plane
 
Shear planes reported along {010} and/or {110} with c/2 shifts

Probable locations are shown in the pictures to the right.
References
"On faults in the framework structure of the zeolite ferrierite"
Gramlich-Meier, R., Meier,  W. M. and Smith,  Β. K.
Z. Kristallogr., 169, 201-210 (1984)
Shear planes viewed along [001]

Example of {010} shear plane
 

Example of {110} shear plane

 

Year code assigned 1978
Data last updated Jul  1, 2023

Copyright © 2017 Structure Commission of the International Zeolite Association (IZA-SC)