Database of Zeolite Structures
 

Framework Type -RON
Type Material
  Material Name: Roggianite    
 
Chemical Formula:
 
|Ca2+16 (H2O)19| [Be8Al16Si32 O104(OH)16]--RON
 
   
Unit Cell:
 
tetragonal

 I 4/m c m (# 140)
    a = 18.3300Å b = 18.3300Å c = 9.1600Å  
    α = 90.000 ° β = 90.000° γ = 90.000°  
   
Framework density:
 
18.2 T/1000 Å3
 
 
Channels:
 
[001] 12 4.3 x 4.3*
Dimensionality
  Sorption (molecular cross section > 3.4Å): 1-dimensional
  Topological (pore opening > 6-ring): 1-dimensional
   
References:
    Giuseppetti, G., Mazzi, F., Tadini, C. and Galli, E.
   "The revised crystal structure of roggianite: Ca2[Be(OH)2Al2Si4O13]·2.5H2O"
   N. Jb. Miner. Mh., 7, 307-314 (1991)
 
 
Name and Code derivation:
    Roggianite
  -RON
Limiting Rings
 
12-ring viewed along [001]