Database of Zeolite Structures
 

Framework Type NAB
Reference Material
  Material Name: Nabesite    
 
Chemical Formula:		  
|Na4 (H2O)8|2 [Be2Si8O20]2-NAB		  
   
Unit Cell: 		 
orthorhombic
 P 21 21 21 (# 19)
    a' = 9.7480 Å b' = 10.1330 Å c' = 11.9540 Å  
    α' = 90.000° β' = 90.000° γ' = 90.000°  
   
Framework Density: 		 
16.9 T/1000 Å3
 
  
Channels: 		 
[110] 9 2.7 x 4.1* <-> [-1 -1 0] 9 3.0 x 4.6*
Dimensionality
  Sorption (molecular cross section > 3.4Å): 0-dimensional
  Topological (pore opening > 6-ring): 3-dimensional
 
Stability:		  
reversable dehydration
   
References:
  Petersen, O.V., Giester, G., Brandstätter, F. and Niedermayr, G.
  "Nabesite, Na2BeSi4O102O, a new mineral species from the Ilímaussaq alkaline complex, South Greenland"
Can. Mineral., 40, 173-181 (2002)
 
  
Name and Code derivation:
    Nabesite
  NAB
Limiting Rings
 
9-ring viewed along [110]

9-ring viewed along [-1-1 0]


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