Tremolite Oberti R, Ungaretti L, Cannillo E, Hawthorne F C, Memmi I European Journal of Mineralogy 7 (1995) 1049-1063 Temperature-dependent Al order-disorder in the tetrahedral double chain of C2/m amphiboles Sample: S(1) _database_code_amcsd 0006601 9.810 18.091 5.294 90 104.58 90 C2/m atom x y z occ Biso NaA 0 1/2 0 .022 1.82 KA 0 1/2 0 .008 1.82 NaAm .0282 1/2 .0573 .022 2.52 KAm .0282 1/2 .0573 .008 2.52 NaA2 0 .4807 0 .022 2.50 KA2 0 .4807 0 .008 2.50 FeM1 0 .0886 1/2 .22 .59 MgM1 0 .0886 1/2 .78 .59 AlM2 0 .1771 0 .08 .55 FeM2 0 .1771 0 .21 .55 MgM2 0 .1771 0 .71 .55 AlM3 0 0 0 .05 .68 FeM3 0 0 0 .28 .68 MgM3 0 0 0 .67 .68 CaM4 0 .2778 1/2 .4175 .89 NaM4 0 .2778 1/2 .01 .89 MnM4 0 .2778 1/2 .0075 .89 FeM4 0 .2778 1/2 .065 .89 CaM4' 0 .2528 1/2 .4175 2.48 NaM4' 0 .2528 1/2 .01 2.48 MnM4' 0 .2528 1/2 .0075 2.48 FeM4' 0 .2528 1/2 .065 2.48 SiT1 .2808 .0846 .2964 .845 .53 AlT1 .2808 .0846 .2964 .155 .53 SiT2 .2900 .1715 .8055 .59 H .2013 0 .7459 .9865 .80 O1 .1099 .0878 .2149 .77 O2 .1202 .1727 .7279 .69 O3 .1104 0 .7132 .9865 .84 F3 .1104 0 .7132 .0135 .84 O4 .3672 .2483 .7901 .96 O5 .3476 .1360 .1002 1.05 O6 .3437 .1185 .5919 .97 O7 .3368 0 .2878 1.09