Citation: Xu, H.; Heaney, P. J.; Beall, G. H. (2000). Phase transitions induced by solid solution in stuffed derivatives of quartz: A powder synchrotron XRD study of the LiAlSiO4-SiO2 join Sample: x=.50, Li.5Al.5Si1.5O4, beta quartz structure. American Mineralogist, 85, pp. 971-979.