Pyroxene
Molin G M
American Mineralogist 74 (1989) 593-598
Crystal-chemical study of cation disordering in Al-rich and Al-poor
orthopyroxenes from spinel lherzolite xenoliths
sample Le9A, 1050 C, 3 min
_database_code_amcsd 0001239
18.250 8.830 5.190 90 90 90 Pbca
atom     x     y     z  occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Mg1  .3758 .6541 .8665 .962 0.0074 0.0085 0.0075 -.0003 -.0004  .0003
Fe1  .3758 .6541 .8665 .038 0.0074 0.0085 0.0075 -.0003 -.0004  .0003
Mg2  .3775 .4851 .3597 .870 0.0104 0.0113 0.0085 -.0014 -.0018  .0000
Fe2  .3775 .4851 .3597 .130 0.0104 0.0113 0.0085 -.0014 -.0018  .0000
SiA  .2715 .3414 .0494      0.0064 0.0076 0.0067 -.0003  .0002  .0000
SiB  .4736 .3372 .7989      0.0066 0.0076 0.0072  .0003 -.0003  .0001
O1   .1833 .3395 .0359      0.0048 0.0102 0.0090  .0001  .0005  .0007
O2   .3109 .5022 .0440      0.0092 0.0091 0.0094 -.0012 -.0006 -.0003
O3   .3028 .2244 .8289      0.0073 0.0120 0.0088  .0001 -.0007 -.0019
O4   .5625 .3394 .8000      0.0063 0.0106 0.0087 -.0004  .0002 -.0001
O5   .4331 .4838 .6908      0.0094 0.0100 0.0093  .0015 -.0007  .0010
O6   .4473 .1959 .6029      0.0081 0.0115 0.0085 -.0004 -.0001 -.0023