Kosmochlor
Origlieri M J, Downs R T, Thompson R M, Pommier C J S, Denton M B, Harlow G E
American Mineralogist 88 (2003) 1025-1032
High-pressure crystal structure of kosmochlor, NaCrSi2O6, and systematics of
anisotropic compression in pyroxenes
Sample: P = 6.25 GPa
_database_code_amcsd 0003139
9.4295 8.5700 5.1844 90 106.999 90 C2/c
atom     x     y     z Biso
Na2      0 .3034   .25  1.3
Cr1      0 .9087   .25  .80
Si   .2929 .0935 .2343  .86
O1    .115 .0805  .138  0.8
O2    .362 .2622  .313  1.1
O3    .354 .0150  .002  0.9