Database of Zeolite Structures
 

Framework Type FRA
Reference Material
  Material Name: Franzinite    
 
Chemical Formula:
 
|(Na,K)30 Ca10 (SO4)10 (H2O)2 | [Al30Si30O120]-FRA
 
   
Unit Cell:
 
trigonal

 P 3 2 1 (# 164)
    a' = 12.9160 Å b' = 12.9160 Å c' = 26.5430 Å  
    α' = 90.000° β' = 90.000° γ' = 120.000°  
   
Framework Density:
 
15.6 T/1000 Å3
 
 
Channels:
 
apertures formed by 6-rings only
Dimensionality
  Sorption (molecular cross section > 3.4Å): 0-dimensional
  Topological (pore opening > 6-ring): 0-dimensional
   
References:
  Ballirano, P., Bonaccorsi, E., Maras, A. and Merlino, S.
  "The crystal structure of franzinite, the ten-layer mineral of the cancrinite group"
Can. Mineral., 38, 657-668 (2000)
  Ballirano, P. and Maras, A.
  "Improved powder X-ray data for cancrinites IV: Franzinite"
Powder Diffraction, 16, 216-219 (2001)
Material name:   Franzinite
Chemical formula:   [Al30Si30O120]-FRA
 
 
Name and Code derivation:
    Franzinite
  FRA