Enstatite Gatta G D, Rinaldi R, Knight K S, Molin G, Artioli G Physics and Chemistry of Minerals 34 (2007) 185-200 High temperature structural and thermoelastic behaviour of mantle orthopyroxene: an in situ neutron powder diffraction study Sample: T = 1150 C _database_code_amcsd 0009060 18.4450 8.9589 5.2749 90 90 90 Pbca atom x y z occ Uiso MgM1 .3812 .6516 .8913 .927 .04139 FeM1 .3812 .6516 .8913 .063 .04139 MgM2 .3731 .4852 .3673 .893 .04650 FeM2 .3731 .4852 .3673 .087 .04650 SiA .2710 .3473 .0621 .01572 SiB .4753 .3398 .7761 .97 .01572 AlB .4753 .3398 .7761 .03 .01572 O1A .1852 .3395 .0535 .01780 O1B .5626 .3430 .7859 .01780 O2A .3115 .5039 .0470 .01780 O2B .4321 .4944 .7045 .01780 O3A .3024 .2353 -.1706 .01780 O3B .4499 .2071 .5776 .01780