Sodalite model extension to zeolite

These equations are predictive for a wide range of samples with aA values in the range 11.8 to 12.4. 

In the ideal situation, 8 monovalent cations are expected to occupy the p cage site Up corresponding to a population factor of one. As larger cations are considered one expects cation-cation avoidance to be achieved by adoption of a tetrahedral arrangement of 4 cations in Up sites, the other 4 being pushed out into Ila sites hence reducing the population factor in the p cage. Table 6 shows the predicted fractional coordinates and occupancy factor for selected dehydrated zeolite A examples. Zeolites NaA and AgA 

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