Pargasite Oberti R, Hawthorne F C, Ungaretti L, Cannillo E The Canadian Mineralogist 33 (1995) 867-878 [6]Al disorder in amphiboles from mantle peridotites Sample: F11 _database_code_amcsd 0005455 9.857 17.932 5.285 90 105.36 90 C2/m atom x y z occ Biso SiT1 .2807 .0854 .3031 .761 .46 AlT1 .2807 .0854 .3031 .239 .46 SiT2 .2910 .1734 .8139 .761 .50 AlT2 .2910 .1734 .8139 .239 .50 MgM1 0 .0894 .5 .93 .53 FeM1 0 .0894 .5 .07 .53 CrM2 0 .1762 0 .02 .54 AlM2 0 .1762 0 .31 .54 FeM2 0 .1762 0 .05 .54 MgM2 0 .1762 0 .62 .54 AlM3 0 0 0 .28 .50 MgM3 0 0 0 .64 .50 FeM3 0 0 0 .08 .50 FeM4 0 .2796 .5 .08 .77 MgM4 0 .2796 .5 .02 .77 CaM4 0 .2796 .5 .90 .77 FeM4' 0 .2543 .5 .08 .87 MgM4' 0 .2543 .5 .02 .87 CaM4' 0 .2543 .5 .92 .87 NaA 0 .5 0 .187 2.36 KA 0 .5 0 .003 2.36 NaA(m) .0254 .5 .0801 .187 5.31 KA(m) .0254 .5 .0801 .003 5.31 NaA(2) 0 .4683 0 .186 1.26 KA(2) 0 .4683 0 .002 1.26 H .1855 0 .7555 2.69 O1 .1059 .0875 .2144 .92 O2 .1197 .1736 .7347 .69 Oh3 .1074 0 .7183 .85 O4 .3679 .2505 .7871 .92 O5 .3507 .1416 .1146 .88 O6 .3433 .1152 .6146 1.05 O7 .3410 0 .2694 1.09