Enstatite Domeneghetti M C, Molin G M, Stimpfl M, Tribaudino M American Mineralogist 80 (1995) 923-929 Orthopyroxene from the Serra de Mage meteorite: Structure refinement and estimation of C2/c pyroxene contributions to apparent Pbca diffraction violations Sample: OPX SDM N.13, natural _database_code_amcsd 0001755 18.316 8.907 5.218 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 .27149 .34060 .05180 .00044 .00135 .00294 -.00013 -.00001 -.00008 Sib .47403 .33660 .79535 .00047 .00154 .00219 .00014 .00009 .00001 Mg1 .37540 .65459 .87426 .896 .00056 .00177 .00263 .00000 -.00015 .00015 Fe1 .37540 .65459 .87426 .104 .00056 .00177 .00263 .00000 -.00015 .00015 Fe2 .37797 .48308 .36794 .703 .00062 .00245 .00259 -.00012 -.00048 -.00008 Mg2 .37797 .48308 .36794 .254 .00062 .00245 .00259 -.00012 -.00048 -.00008 Ca2 .37797 .48308 .36794 .043 .00062 .00245 .00259 -.00012 -.00048 -.00008 O1a .18355 .33731 .04361 .00046 .00239 .00322 -.00010 .00033 .00016 O1b .56266 .33632 .79552 .00042 .00255 .00364 .00011 -.00036 .00031 O2a .31117 .50053 .05332 .00069 .00192 .00466 -.00020 -.00058 .00004 O2b .43402 .48555 .69789 .00070 .00249 .00455 .00032 -.00019 .00076 O3a .30233 .23184 -.17642 .00060 .00273 .00635 .00001 .00036 -.00239 O3b .44739 .20280 .59356 .00062 .00280 .00649 -.00003 -.00014 -.00234