Forsterite Brown G E, Prewitt C T American Mineralogist 58 (1973) 577-587 High-temperature crystal chemistry of hortonolite sample #12052 T = 375 C Note: variety hortonolite _database_code_amcsd 0000326 4.795 10.337 6.045 90 90 90 Pbnm atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Si .4279 .0952 .25 .0052 .0012 .0050 .0001 0 0 Mg1 0 0 0 .677 .0084 .0025 .0053 -.0001 -.0010 -.0010 Fe1 0 0 0 .323 .0084 .0025 .0053 -.0001 -.0010 -.0010 Mg2 .9886 .2788 .25 .703 .0112 .0013 .0060 .0001 0 0 Fe2 .9886 .2788 .25 .287 .0112 .0013 .0060 .0001 0 0 Ca2 .9886 .2788 .25 .010 .0112 .0013 .0060 .0001 0 0 O1 .7654 .0919 .25 .0048 .0027 .0064 .0006 0 0 O2 .2177 .4496 .25 .0111 .0012 .0070 -.0003 0 0 O3 .2816 .1636 .0348 .0102 .0024 .0064 .0002 -.0005 .0011