Aegirine
Cameron M, Sueno S, Prewitt C T, Papike J J
American Mineralogist 58 (1973) 594-618
High-temperature crystal chemistry of acmite, diopside, hedenbergite, jadeite,
spodumene, and ureyite
T = 600 C
pyroxene
_database_code_amcsd 0000338
9.699 8.855 5.307 90 107.32 90 C2/c
atom     x     y     z B(1,1) B(2,2) B(3,3)  B(1,2)  B(1,3)  B(2,3)
Si   .2902 .0889 .2332 .00238 .00364 .00760 -.00031  .00122 -.00040
Fe1      0 .8974   1/4 .00278 .00375 .00922       0  .00124       0
Na2      0 .3001   1/4 .01073 .00762 .02049       0 -.00203       0
O1   .1142 .0775 .1364 .00241 .00541 .01021 -.00021  .00100  .00067
O2   .3587 .2537 .2975 .00518 .00435 .01936 -.00177  .00299 -.00056
O3   .3511 .0074 .0098 .00336 .00698 .01075  .00012  .00141 -.00240