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 ambient conditions (.001 kbar) _database_code_amcsd 0006418 9.881 17.998 5.284 90 105.25 90 C2/m atom x y z occ Uiso NaA 0 1/2 0 .26 .040 NaAM .0460 1/2 .1297 .12 .043 NaA2 0 .4666 0 .12 .025 KA2 0 .4666 0 .01 .025 MgM1 0 .0888 1/2 .945 .0058 FeM1 0 .0888 1/2 .055 .0058 MgM2 0 .1761 0 .725 .0045 AlM2 0 .1761 0 .15 .0045 CrM2 0 .1761 0 .09 .0045 TiM2 0 .1761 0 .035 .0045 MgM3 0 0 0 .92 .0046 FeM3 0 0 0 .08 .0046 CaM4 0 .2791 1/2 .49 .0096 FeM4 0 .2791 1/2 .01 .0096 CaM42 .4653 .2198 .6168 .25 .045 SiT1 .2797 .0850 .3022 .655 .0052 AlT1 .2797 .0850 .3022 .345 .0052 SiT2 .2899 .1726 .8112 .0056 O1 .1077 .0873 .2185 .0088 O2 .1193 .1729 .7306 .0089 O3 .1077 0 .7152 .0103 O4 .3664 .2494 .7887 .0102 O5 .3484 .1390 .1096 .0112 O6 .3436 .1164 .6064 .0125 O7 .3382 0 .2795 .0132 H .175 0 .748 .012