Database of Zeolite Structures
 

Framework Type LAU
Reference Material
  Material Name: Laumontite    
 
Chemical Formula:
 
|Ca4 (H2O)16 | [Al8Si16O48]-LAU
 
   
Unit Cell:§
 
monoclinic

 A 1 m 1 (# 12)
    a' = 7.5490 Å b' = 14.7400 Å c' = 13.0720 Å  
    α' = 90.000° β' = 90.000° γ' = 111.900°  
(Relationship to unit cell of Framework Type: a' = c, b' = a, c' = b, γ' = β)
   
Framework Density:
 
17.8 T/1000 Å3
 
 
Channels:
 
[100] 10 4.0 x 5.3* (contracts upon dehydration)
Dimensionality
  Sorption (molecular cross section > 3.4Å): 1-dimensional
  Topological (pore opening > 6-ring): 1-dimensional
   
References:
  Bartl, H. and Fischer, K.
  "Untersuchung der Kristallstruktur des Zeolithes Laumontit"
N. Jb. Miner. Mh., , 33-42 (1967)
Material name:   Laumontite
Chemical formula:   [Al8Si16O48]-LAU
  § Schramm, V. and Fischer
  "Refinement of the crystal structure of Laumontite"
Adv. Chem. Ser. , 101, 259-265 (1971)
  Amirov, S.T., Ilyukhin, V.V. and Belov, N.V.
Dokl. Akad. Nauk SSSR, 174, 667- (1967)
Material name:   Laumontite
Chemical formula:   [Al8Si16O48]-LAU
  Artioli, G. and Ståhl, K.
  "Fully Hydrated Laumontite - A Structure Study by Flat-Plate and Capillary Powder Diffraction Techniques "
Zeolites, 17, 249-255 (1993)
Material name:   Laumontite
Chemical formula:   [Al8Si16O48]-LAU
 
 
Name and Code derivation:
    Laumontite
  LAU
 
 
§ Chemical Formula and Unit Cell taken from the reference marked with this sign
Limiting Rings
 
10-ring viewed along [100]