Thompson R M, Downs R T
American Mineralogist 89 (2004) 614-628
Model pyroxenes II: Structural variation as a function of tetrahedral rotation
model sodium vanadium px
with O3-O3-O3 angle = 173.0 and model oxygen radius = 1.300
_database_code_amcsd 0003500
9.712 8.992 5.192 90 109.7 90 C2/c
atom x y z
V 0 11/12 1/4
Na 0 .25 1/4
Si .3081 1/12 .2779
O1 .1339 1/12 .1679
O2 .3661 .25 .3321
O3 .3661 .0088 .0558
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