Database of Zeolite Structures
 

Framework Type EPI
Reference Material
  Material Name: Epistilbite    
 
Chemical Formula:		  
|Ca3 (H2O)16 | [Al6Si18O48]-EPI		  
   
Unit Cell:§ 		 
monoclinic
 C 1 2/m 1 (# 12)
    a' = 9.0800 Å b' = 17.7400 Å c' = 10.2500 Å  
    α' = 90.000° β' = 124.540° γ' = 90.000°  
   
Framework Density: 		 
17.6 T/1000 Å3
 
  
Channels: 		 
{ [001] 8  3.7 x 4.5 <-> [100] 8 3.6 x 3.6 }**
Dimensionality
  Sorption (molecular cross section > 3.4Å): 2-dimensional
  Topological (pore opening > 6-ring): 2-dimensional
    Note:
The 8-ring along [100] is tilted and has its normal along [101].
   
References:
  Kerr, I.S.
  "Structure of epistilbite"
Nature, 202, 589 (1964)
Material name:   Epistilbite
Chemical formula:   [Al6Si18O48]-EPI
  § Perrotta, A.J.
  "The crystal structure of epistilbite"
Mineral. Mag., 36, 480-490 (1967)
  Alberti, A., Galli, E. and Vezzalini, G.
  "Epistilbite: an acentric zeolite with domain structure"
Z. Kristallogr., 173, 257-265 (1985)
Material name:   Epistilbite
Chemical formula:   [Al6Si18O48]-EPI
  Yang, P. and Armbruster, T.
  "(010) disorder, partial Si,Al ordering, and Ca distribution in triclinic (C1) epistilbite "
Eur. J. Mineral., 8, 263-271 (1996)
Material name:   Epistilbite
Chemical formula:   [Al6Si18O48]-EPI
 
  
Name and Code derivation:
    Epistilbite
  EPI
 
 
§ Chemical Formula and Unit Cell taken from the reference marked with this sign
Limiting Rings
 
8-ring viewed along [001]

8-ring viewed along [101]


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