Actinolite Evans B W, Yang H American Mineralogist 83 (1998) 458-475 Fe-Mg order-disorder in tremolite-actinolite-ferro-actinolite at ambient and high temperature Sample: ID4-4C, from Isua Belt, East Greenland, in an iron formation _database_code_amcsd 0001997 9.908 18.218 5.301 90 104.59 90 C2/m atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Fe1 0 .0888 .5 .631 .0024 .0003 .0028 0 .0010 0 Mn1 0 .0888 .5 .012 .0024 .0003 .0028 0 .0010 0 Mg1 0 .0888 .5 .357 .0024 .0003 .0028 0 .0010 0 Fe2 0 .1786 0 .556 .0017 .0003 .0040 0 .0005 0 Mn2 0 .1786 0 .028 .0017 .0003 .0040 0 .0005 0 Mg2 0 .1786 0 .409 .0017 .0003 .0040 0 .0005 0 Al2 0 .1786 0 .006 .0017 .0003 .0040 0 .0005 0 Ti2 0 .1786 0 .001 .0017 .0003 .0040 0 .0005 0 Fe3 0 0 0 .592 .0017 .0003 .0035 0 .0005 0 Mg3 0 0 0 .408 .0017 .0003 .0035 0 .0005 0 Fe4 0 .2766 .5 .073 .0028 .0008 .0071 0 .0027 0 Mn4 0 .2766 .5 .004 .0028 .0008 .0071 0 .0027 0 Mg4 0 .2766 .5 .007 .0028 .0008 .0071 0 .0027 0 Ca4 0 .2766 .5 .907 .0028 .0008 .0071 0 .0027 0 Na4 0 .2766 .5 .009 .0028 .0008 .0071 0 .0027 0 Si1 .2797 .0838 .2927 .997 .0015 .0002 .0026 -.0001 .0001 -.0001 Al1 .2797 .0838 .2927 .003 .0015 .0002 .0026 -.0001 .0001 -.0001 Si2 .2892 .1702 .8005 .0015 .0003 .0021 .0000 .0004 .0001 H .201 0 .739 .930 O1 .1130 .0874 .2143 .0015 .0005 .0018 -.0001 -.0003 .0001 O2 .1211 .1732 .7224 .0018 .0005 .0044 -.0001 .0002 .0000 O3 .1113 0 .7134 .980 .0023 .0006 .0070 0 .0008 0 F3 .1113 0 .7134 .005 .0023 .0006 .0070 0 .0008 0 Cl3 .1113 0 .7134 .015 .0023 .0006 .0070 0 .0008 0 O4 .3674 .2458 .7909 .0031 .0003 .0063 -.0004 .0013 -.0002 O5 .3451 .1325 .0947 .0020 .0006 .0037 .0001 .0007 .0007 O6 .3429 .1186 .5833 .0023 .0006 .0041 .0001 .0012 -.0004 O7 .3338 0 .2913 .0022 .0001 .0084 0 .0008 0