Database of Zeolite Structures
 

Framework Type AFG
Reference Material
  Material Name: Afghanite    
 
Chemical Formula:
 
|Ca9.8Na22 Cl2(SO4)5.3CO3(H2O)4 | [Al24Si24O96]-AFG
 
   
Unit Cell:§
 
hexagonal

 P 63 m c (# 194)
    a' = 12.7610 Å b' = 12.7610 Å c' = 21.4160 Å  
    α' = 90.000° β' = 90.000° γ' = 120.000°  
   
Framework Density:
 
15.9 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:
  Bariand, P., Cesbron, F. and Giraud, R.
  "Une nouvelle espèce minérale: l’afghanite de Sar-e-Sang, Badakhshan, Afghanistan. Comparaison avec les minéraux du groupe de la cancrinite"
Bull. Soc. fr. Minéral. Cristallogr., 91, 34-42 (1968)
Material name:   Afghanite
Chemical formula:   [Al24Si24O96]-AFG
  § Pobedimskaya, E.A., Rastsvetaeva, R.K., Terent’eva, L.E. and Sapozhnikov, A.N.
  "Crystal structure of afghanite"
Dokl. Akad. Nauk SSSR, 320, 882-886 (1991)
  Merlino, S. and Mellini, M.
Zeolite 1976, Program and Abstracts, Tucson, , (1976)
Material name:   Afghanite
Chemical formula:   [Al24Si24O96]-AFG
  Ballirano, P., Bonaccorsi, E., Maras, A. and Merlino, S.,
  "Crystal structure of afghanite, the eight-layer member of the cancrinite-group: evidence for long-range Si,Al ordering"
Eur. J. Mineral., 9, 21-30 (1997)
Material name:   Afghanite
Chemical formula:   [Al24Si24O96]-AFG
 
 
Name and Code derivation:
    Afghanite
  AFG
 
 
§ Chemical Formula and Unit Cell taken from the reference marked with this sign