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 = 400 C
pyroxene
_database_code_amcsd 0000337
9.677 8.829 5.298 90 107.33 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   .2904 .0891 .2338 .00163 .00282 .00629 -.00025  .00087 -.00011
Fe1      0 .8979   1/4 .00194 .00285 .00735       0  .00079       0
Na2      0 .3000   1/4 .00800 .00577 .01633       0 -.00092       0
O1   .1141 .0778 .1368 .00169 .00414 .00826 -.00038  .00065  .00072
O2   .3586 .2545 .2989 .00368 .00362 .01559 -.00132  .00235 -.00052
O3   .3514 .0076 .0112 .00232 .00528 .00954 -.00019  .00121 -.00200