Richterite Oberti R, Hawthorne F C, Ungaretti L, Cannillo E European Journal of Mineralogy 5 (1993) 43-51 The behaviour of Mn in amphiboles: Mn in richerite Sample: MR(5) using occupancies from MR(4) _database_code_amcsd 0006468 9.974 18.078 5.282 90 104.36 90 C2/m atom x y z occ Biso NaA2/m 0 .5 0 .11 3.76 KA2/m 0 .5 0 .07 3.76 NaAm .0331 .5 .0816 .11 4.57 KAm .0331 .5 .0816 .07 4.57 NaA2 0 .4711 0 .11 2.16 KA2 0 .4711 0 .07 2.16 MgM1 0 .0888 .5 .93 .51 FeM1 0 .0888 .5 .07 .51 MgM2 0 .1807 0 .54 .60 AlM2 0 .1807 0 .03 .60 MnM2 0 .1807 0 .41 .60 FeM2 0 .1807 0 .02 .60 MgM3 0 0 0 .98 .49 FeM3 0 0 0 .02 .49 NaM4 0 .2769 .5 .225 .94 MgM4 0 .2769 .5 .0125 .94 CaM4 0 .2769 .5 .23 .94 MnM4 0 .2769 .5 .0325 .94 NaM4' 0 .2578 .5 .225 .98 MgM4' 0 .2578 .5 .0125 .98 CaM4' 0 .2578 .5 .23 .98 MnM4' 0 .2578 .5 .0325 .98 SiT1 .2773 .0845 .2949 .9925 .42 AlT1 .2773 .0845 .2949 .0075 .42 SiT2 .2860 .1707 .8000 .9925 .45 AlT2 .2860 .1707 .8000 .0075 .45 H .1939 0 .7591 .825 2.18 O1 .1117 .0854 .2179 .58 O2 .1195 .1697 .7230 .67 O3 .1066 0 .7149 .825 .69 F .1066 0 .7149 .175 .69 O4 .3622 .2470 .7925 .93 O5 .3443 .1301 .0897 .80 O6 .3414 .1164 .5888 .82 O7 .3357 0 .2914 .91