Pargasite Comodi P, Mellini M, Ungaretti L, Zanazzi P F European Journal of Mineralogy 3 (1991) 485-499 Compressibility and high pressure structure refinement of tremolite, pargasite and glaucophane Sample: pressure at 35 kbar _database_code_amcsd 0006419 9.733 17.828 5.240 90 105.6 90 C2/m atom x y z occ Uiso NaA 0 1/2 0 .74 .076 KA 0 1/2 0 .02 .076 MgM1 0 .0884 1/2 .945 .0076 FeM1 0 .0884 1/2 .055 .0076 MgM2 0 .1749 0 .725 .0081 AlM2 0 .1749 0 .15 .0081 CrM2 0 .1749 0 .09 .0081 TiM2 0 .1749 0 .035 .0081 MgM3 0 0 0 .92 .0072 FeM3 0 0 0 .08 .0072 CaM4 0 .2786 1/2 .099 .0075 FeM4 0 .2786 1/2 .01 .0075 SiT1 .2813 .0847 .3058 .655 .0054 AlT1 .2813 .0847 .3058 .345 .0054 SiT2 .2859 .1728 .8113 .0049 O1 .1068 .0869 .2170 .0081 O2 .1125 .1716 .7314 .0139 OH3 .1124 0 .7163 .0120 O4 .3689 .2508 .7860 .0104 O5 .3544 .1413 .1204 .0129 O6 .3461 .1151 .6160 .0137 O7 .3487 0 .2796 .0122