Coesite Sasaki S, Chen H K, Prewitt C T, Nakajima Y Zeitschrift fur Kristallographie 164 (1983) 67-77 Re-examination of "P2_1/a coesite" Locality: synthetic Note: z(O7), z(O8) corrected Note: This is not the structure of coesite, it is a model for a twin _database_code_amcsd 0010855 7.137 12.370 7.174 90 120.33 90 C2/c atom x y z occ Biso Si1 .3256 .3575 .3905 .5 .05 Si2 .6928 .3595 .1100 .5 .80 Si3 .7804 .4037 .7376 .5 .44 Si4 .2124 .4124 .7505 .5 .39 O1 .2312 .2501 .2533 .5 .09 O2 -.0148 .3660 .7520 .5 .36 O3 .2385 .3535 .5627 .5 -.17 O4 .5876 .3740 .5209 .5 .56 O5 .7923 .4621 .2632 .5 -.21 O6 .2238 .4610 .2239 .5 2.00 O7 .4362 .3734 -.0123 .5 .79 O8 .7818 .3541 -.0567 .5 2.52