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 = 400 C
pyroxene
_database_code_amcsd 0000346
9.87 9.077 5.258 90 105.01 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   .2875 .0921 .2329 .00205 .00236 .00677 -.00016  .00101 -.00021
Fe1      0 .9064   1/4 .00262 .00279 .00853       0  .00076       0
Ca2      0 .2993   1/4 .00468 .00339 .01085       0 -.00053       0
O1   .1195 .0898 .1519 .00222 .00388 .01084  .00020  .00095  .00015
O2   .3619 .2449 .3211 .00474 .00322 .01485 -.00126  .00179 -.00078
O3   .3497 .0180 .9949 .00292 .00467 .00986 -.00000  .00161 -.00226