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: F12 _database_code_amcsd 0005456 9.854 17.935 5.285 90 105.31 90 C2/m atom x y z occ Biso SiT1 .2807 .0854 .3030 .762 .43 AlT1 .2807 .0854 .3030 .238 .43 SiT2 .2910 .1734 .8139 .762 .45 AlT2 .2910 .1734 .8139 .238 .45 MgM1 0 .0894 .5 .92 .50 FeM1 0 .0894 .5 .08 .50 CrM2 0 .1762 0 .02 .47 AlM2 0 .1762 0 .32 .47 FeM2 0 .1762 0 .04 .47 MgM2 0 .1762 0 .62 .47 AlM3 0 0 0 .27 .48 MgM3 0 0 0 .65 .48 FeM3 0 0 0 .08 .48 FeM4 0 .2800 .5 .03 .62 MgM4 0 .2800 .5 .02 .62 CaM4 0 .2800 .5 .45 .62 FeM4' 0 .2586 .5 .03 .80 MgM4' 0 .2586 .5 .02 .80 CaM4' 0 .2586 .5 .45 .80 NaA 0 .5 0 .183 5.72 KA 0 .5 0 .002 5.72 NaA(m) .0169 .5 .0583 .183 3.78 KA(m) .0169 .5 .0583 .002 3.78 NaA(2) 0 .4696 0 .183 1.82 KA(2) 0 .4696 0 .002 1.82 H .1926 0 .7648 2.27 O1 .1060 .0875 .2146 .90 O2 .1196 .1736 .7346 .66 Oh3 .1076 0 .7189 .83 O4 .3677 .2505 .7875 .88 O5 .3507 .1417 .1151 .86 O6 .3434 .1153 .6143 1.02 O7 .3410 0 .2694 1.04