Cristobalite Dollase W A Zeitschrift fur Kristallographie 121 (1965) 369-377 Reinvestigation of the structure of low cristobalite Locality: Ellora, Hyderabad, India _database_code_amcsd 0010623 4.978 4.978 6.948 90 90 90 P4_12_12 atom x y z Biso Si .30004 .30004 0 .83 O .23976 .10324 .17844 1.55