Ferro-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: C80, NMNH 168215, from Goose Creek Quarry, Leesburg, Virginia, in an alteration of hornblende, after heating at 700 C _database_code_amcsd 0002000 9.986 18.296 5.306 90 104.79 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 .0891 .5 .827 .0014 .0006 .0025 0 .0006 0 Mn1 0 .0891 .5 .023 .0014 .0006 .0025 0 .0006 0 Mg1 0 .0891 .5 .150 .0014 .0006 .0025 0 .0006 0 Fe2 0 .1792 0 .792 .0011 .0005 .0026 0 .0005 0 Mn2 0 .1792 0 .064 .0011 .0005 .0026 0 .0005 0 Mg2 0 .1792 0 .142 .0011 .0005 .0026 0 .0005 0 Ti2 0 .1792 0 .002 .0011 .0005 .0026 0 .0005 0 Fe3 0 0 0 .842 .0015 .0004 .0026 0 .0003 0 Mg3 0 0 0 .158 .0015 .0004 .0026 0 .0003 0 Fe4 0 .2779 .5 .012 .0023 .0007 .0075 0 .0023 0 Mn4 0 .2779 .5 .003 .0023 .0007 .0075 0 .0023 0 Ca4 0 .2779 .5 .976 .0023 .0007 .0075 0 .0023 0 Na4 0 .2779 .5 .009 .0023 .0007 .0075 0 .0023 0 Si1 .2789 .0836 .2927 .995 .0009 .0005 .0009 -.0001 .0002 -.0001 Al1 .2789 .0836 .2927 .005 .0009 .0005 .0009 -.0001 .0002 -.0001 Si2 .2888 .1697 .8007 .0009 .0005 .0012 -.0001 .0001 .0000 NaA(m) .022 .5 .047 .003 KA(m) .022 .5 .047 .024 H .177 0 .760 .934 O1 .1129 .0874 .2145 .0010 .0008 .0012 -.0001 .0002 -.0002 O2 .1217 .1735 .7203 .0010 .0008 .0028 -.0001 .0002 -.0002 O3 .1106 0 .7120 .992 .0014 .0008 .0069 0 .0006 0 F3 .1106 0 .7120 .005 .0014 .0008 .0069 0 .0006 0 Cl3 .1106 0 .7120 .003 .0014 .0008 .0069 0 .0006 0 O4 .3671 .2447 .7914 .0020 .0007 .0038 -.0003 .0014 .0000 O5 .3438 .1319 .0941 .0014 .0009 .0029 -.0001 .0004 .0006 O6 .3424 .1186 .5833 .0013 .0010 .0023 .0001 -.0003 -.0005 O7 .3325 0 .2933 .0009 .0006 .0067 0 .0004 0