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 = 8.97 GPa
_database_code_amcsd 0003144
9.3742 8.5086 5.1484 90 106.721 90 C2/c
atom     x     y     z Biso
Na2      0  .304   .25  1.4
Cr1      0 .9096   .25  .83
Si   .2936 .0938 .2350  .75
O1   .1142  .080  .139  0.8
O2    .359  .264  .314  1.1
O3    .357  .018  .004  0.8