Unit-Cell Dimensions of Natural and Synthetic Scapolites

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Science  14 Sep 1962:
Vol. 137, Issue 3533, pp. 853-854
DOI: 10.1126/science.137.3533.853


In natural scapolites the cell dimension a shows a regular increase from marialite to meionite composition, while c remains constant. Both a and c of synthetic meionite are larger than the corresponding dimensions of synthetic marialite. The cell volume of both natural and synthetic scapolites is a nearly linear function of composition. Variations in cell dimensions of scapolites may be caused by differences in structural state similar to those in plagioclase feldspars.