Thompson R M, Downs R T
American Mineralogist 89 (2004) 614-628
Model pyroxenes II: Structural variation as a function of tetrahedral rotation
model zinc px after Morimoto et al. (1975)
with O3-O3-O3 angle = 161.3 and model oxygen radius = 1.329
_database_code_amcsd 0003507
9.755 9.083 5.244 90 107.9 90 C2/c
atom x y z
Zn 0 11/12 1/4
Zn 0 .25 1/4
Si .3084 1/12 .2596
O1 .1331 1/12 .1594
O2 .3669 .25 .3406
O3 .3669 .0238 .0193
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