Enstatite Hawthorne F C, Ito J The Canadian Mineralogist 15 (1977) 321-338 Synthesis and crystal-structure refinement of transition-metal orthopyroxenes I: Orthoenstatite and (Mg, Mn, Co) orthopyroxene _database_code_amcsd 0005140 18.246 8.839 5.196 90 90 90 Pbca atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) SiA .27165 .3411 .0516 .00039 .00150 .00368 -.00006 .00009 -.00009 SiB .47381 .3371 .7960 .00039 .00147 .00361 .00004 -.00022 -.00007 MgM1 .37562 .6541 .8704 .904 .00037 .00127 .00350 -.00004 -.00015 .00008 CoM1 .37562 .6541 .8704 .065 .00037 .00127 .00350 -.00004 -.00015 .00008 MnM1 .37562 .6541 .8704 .031 .00037 .00127 .00350 -.00004 -.00015 .00008 MgM2 .37712 .4851 .3636 .658 .00057 .00238 .00409 -.00010 -.00042 .00016 CoM2 .37712 .4851 .3636 .198 .00057 .00238 .00409 -.00010 -.00042 .00016 MnM2 .37712 .4851 .3636 .144 .00057 .00238 .00409 -.00010 -.00042 .00016 O1A .1837 .3390 .0396 .00029 .00268 .00517 .00001 .00007 -.00013 O2A .3106 .5019 .0468 .00067 .00196 .00539 -.00032 -.00008 .00042 O3A .3033 .2261 -.1714 .00054 .00280 .00509 .00003 .00000 -.00156 O1B .5623 .3394 .7975 .00047 .00200 .00498 -.00017 .00012 .00060 O2B .4337 .4846 .6935 .00067 .00208 .00441 .00032 -.00010 .00061 O3B .4474 .1985 .5980 .00043 .00276 .00467 -.00007 .00007 -.00141