Nyboite Hawthorne F C, Oberti R, Sardone N The Canadian Mineralogist 34 (1996) 577-593 Sodium at the A site in clinoamphiboles: the effects of composition on patterns of order Sample: A3 - Q95 N.32 _database_code_amcsd 0005488 9.678 17.772 5.310 90 104.21 90 C2/m atom x y z occ Biso SiT1 .2820 .0874 .2980 .86 .44 AlT1 .2820 .0874 .2980 .14 .44 SiT2 .2917 .1737 .8115 .46 MgM1 0 .0904 .5 .93 .54 FeM1 0 .0904 .5 .07 .54 AlM2 0 .1796 0 .69 .52 TiM2 0 .1796 0 .02 .52 FeM2 0 .1796 0 .28 .52 MgM2 0 .1796 0 .01 .52 MgM3 0 0 0 .82 .56 FeM3 0 0 0 .18 .56 FeM4 0 .2786 .5 .04 .98 CaM4 0 .2786 .5 .20 .98 NaM4 0 .2786 .5 .76 .98 NaAm .0492 .5 .1126 .127 2.82 KAm .0492 .5 .1126 .007 2.82 NaA2 0 .4789 0 .246 3.59 KA2 0 .4789 0 .014 3.59 H .1984 0 .7513 .89 2.35 O1 .1064 .0916 .2086 .64 O2 .1181 .1724 .7446 .62 Oh3 .1096 0 .7080 .89 .66 F3 .1096 0 .7080 .11 .66 O4 .3675 .2530 .8003 .78 O5 .3546 .1355 .0969 .99 O6 .3414 .1196 .5969 .93 O7 .3373 0 .2871 1.13