Database of Zeolite Structures
 

Framework Type THO
Reference Material
  Material Name: Thomsonite    
 
Chemical Formula:		  
|Na Ca2 (H2O)6|4 [Al5Si5O20]4-THO		  
   
Unit Cell:§ 		 
orthorhombic
 P n c n (# 52)
    a' = 13.0880 Å b' = 13.0520 Å c' = 13.2290 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
(Relationship to unit cell of Framework Type: a'=a, b'=2b, c'=2c)
   
Framework Density: 		 
17.7 T/1000 Å3
 
  
Channels: 		 
[100] 8 2.3 x 3.9* <-> [010] 8 2.2 x 4.0* <-> [001] 8 2.2 x 3.0*
Dimensionality
  Sorption (molecular cross section > 3.4Å): 0-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
   
References:
  Taylor, W.H., Meek, C.A. and Jackson, W.W.
  "The structures of the fibrous zeolites"
Z. Kristallogr., 84, 373-398 (1933)
Material name:   Thomsonite
Chemical formula:   [Al5Si5O20]4-THO
  § Pluth, J.J., Smith, J.V. and Kvick, Å.
  "Neutron diffraction study of the zeolite thomsonite"
Zeolites, 5, 74-80 (1985)
  Alberti, A., Vezzalini, G. and Tazzoli, V.
  "Thomsonite: a detailed refinement with cross checking by crystal energy calculations"
Zeolites, 1, 91-97 (1981)
Material name:   Thomsonite
Chemical formula:   [Al5Si5O20]4-THO
 
  
Name and Code derivation:
    Thomsonite
  THO
 
 
§ Chemical Formula and Unit Cell taken from the reference marked with this sign
Limiting Rings
 
8-ring viewed along [100]

8-ring viewed along [010]

8-ring along [001], variable

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