Sueno S, Kimata M, Prewitt C T
American Mineralogist 69 (1984) 264-269
The crystal structure of high clinoferrosilicate
T = 1050 C
9.928 9.179 5.338 90 110.20 90 C2/c
atom x y z Biso
Fe1 0 .9014 .25 2.03
Fe2 0 .2625 .25 2.84
Si .2962 .0852 .2708 1.90
O1 .1241 .0903 .1587 3.28
O2 .3747 .2398 .3616 2.23
O3 .3589 .0134 .0445 2.40
Hugh-Jones D A, Woodland A B, Angel R J
American Mineralogist 79 (1994) 1032-1041
The structure of high-pressure C2/c ferrosilite and crystal chemistry of
high-pressure C2/c pyroxenes
P = room pressure
9.7075 9.0807 5.2347 90 108.46 90 P2_1/c
Fe1 .2512 .6538 .2262 .92
Fe2 .2256 .0145 .2239 1.13
SiA .0454 .3384 .2915 .64
SiB .5531 .8334 .2431 .77
O1A .871 .338 .178 .62
O1B .379 .837 .137 .59
O2A .125 .496 .335 .70
O2B .633 .981 .387 1.17
O3A .106 .266 .597 1.45
O3B .608 .702 .470 1.60
P = 1.87 GPa
9.540 8.996 5.008 90 103.01 90 C2/c
Fe1 0 .9054 .25 .38
Fe2 0 .2721 .25 .28
Si .2988 .0882 .2225 .05
O1 .126 .095 .154 .30
O2 .377 .233 .373 .30
O3 .352 .053 .934 .30
Sample: fictive hedenbergite-like C2/c FeSiO3 phase
9.73 9.11 5.23 90 107.8 90 C2/c
atom x y z
Fe1 0 .901 .25
Fe2 0 .263 .25
Si .296 .085 .252
O1 .124 .090 .159
O2 .375 .240 .362
O3 .359 .031 .045
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