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 = 0.0001 GPa
Note: altered y-coordinate of O2
_database_code_amcsd 0003133
9.5720 8.7094 5.2678 90 107.498 90 C2/c
atom      x      y     z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Na2       0  .2999   .25 1.55  .0051  .0045  .0122      0 -.0005      0
Cr1       0 .90769   .25  .91 .00277  .0030  .0078      0  .0005      0
Si   .29259  .0918 .2343  .92  .0028  .0031  .0081  .0000  .0008  .0000
O1    .1137  .0784 .1366 1.01  .0027  .0038  .0081 -.0002  .0004  .0004
O2    .3605  .2589 .3033 1.25  .0038  .0039  .0123 -.0005  .0014 -.0001
O3    .3529  .0095 .0092 1.14  .0035  .0040  .0097  .0006  .0014 -.0002