Pyroxene
Okui M, Sawada H, Marumo F
Physics and Chemistry of Minerals 25 (1998) 318-322
Structure refinement of a nonstoichiometric pyroxene synthesized
under ambient pressure
_database_code_amcsd 0008145
9.719 8.814 5.305 90 106.04 90 C2/c
atom     x     y     z  occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
MgM1     0 .9071   .25 .016  .32  .0038  .0042  .0034  .0000 -.0003  .0000
AlM1     0 .9071   .25 .888  .32  .0038  .0042  .0034  .0000 -.0003  .0000
FeM1     0 .9071   .25 .075  .32  .0038  .0042  .0034  .0000 -.0003  .0000
CaM2     0 .3060   .25 .742  .66  .0105  .0067  .0063  .0000 -.0005  .0000
FeM2     0 .3060   .25 .087  .66  .0105  .0067  .0063  .0000 -.0005  .0000
SiT  .2874 .0941 .2237  .75  .60  .0067  .0072  .0081  .0002  .0012 -.0006
AlT  .2874 .0941 .2237  .25  .60  .0067  .0072  .0081  .0002  .0012 -.0006
O1   .1113 .0859 .1342       .96  .0105  .0125  .0128  .0010  .0023 -.0011
O2   .3633 .2569 .3174      1.10  .0164  .0115  .0125 -.0005  .0019  .0003
O3   .3522 .0190 .9899       .96  .0099  .0122  .0135  .0004  .0020 -.0027