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 = 24 C
pyroxene
_database_code_amcsd 0000345
9.845 9.024 5.245 90 104.74 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   .2878 .0924 .2326 .00111 .00116 .00359 -.00004 .00053 -.00022
Fe1      0 .9075   1/4 .00127 .00119 .00439       0 .00051       0
Ca2      0 .3003   1/4 .00215 .00171 .00532       0 .00006       0
O1   .1197 .0904 .1525 .00120 .00222 .00550  .00017 .00044 -.00007
O2   .3627 .2461 .3228 .00251 .00198 .00732 -.00065 .00086 -.00040
O3   .3502 .0198 .9932 .00165 .00246 .00582 -.00014 .00104 -.00112