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 = 600 C
pyroxene
_database_code_amcsd 0000347
9.884 9.11 5.264 90 105.11 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 .0918 .2329 .00264 .00315 .00843 -.00017  .00132 -.00027
Fe1      0 .9057   1/4 .00362 .00384 .01068       0  .00110       0
Ca2      0 .2990   1/4 .00645 .00440 .01377       0 -.00051       0
O1   .1194 .0894 .1514 .00285 .00522 .01290 -.00003  .00110  .00043
O2   .3620 .2444 .3200 .00628 .00417 .01778 -.00167  .00223 -.00120
O3   .3494 .0172 .9969 .00402 .00585 .01177 -.00010  .00224 -.00263