Citation: Peacor, D. R. (1968). A high temperature single crystal diffractometer study of leucite, (K,Na)AlSi2O6 Sample: T = 635 C Locality: Vesuvius, Italy Note: cell parameters were not reported in the paper. A value was chosen that reproduced the reported bond lengths and thermal ellipsoid axes.. Zeitschrift fur Kristallographie, 127, pp. 213-224.