Hedenbergite
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 = 1000 C
pyroxene
_database_code_amcsd 0000350
9.916 9.179 5.276 90 105.28 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   .2871 .0915 .2327 .00375 .00472 .01197 -.00010  .00175 -.00065
Fe1      0 .9049   1/4 .00561 .00600 .01650       0  .00161       0
Ca2      0 .2984   1/4 .00999 .00661 .02086       0 -.00128       0
O1   .1196 .0890 .1502 .00391 .00828 .01704 -.00010  .00141  .00016
O2   .3617 .2428 .3173 .00876 .00654 .02611 -.00247  .00254 -.00130
O3   .3484 .0160 .9976 .00540 .00863 .01733 -.00036  .00261 -.00454