Chromium-dravite Bosi F, Lucchesi S, Reznitskii L European Journal of Mineralogy 16 (2004) 345-352 Crystal chemistry of the dravite-chromdravite series Note: Tourmaline TMt3c Locality: Sludyanka crystalline complex, Lake Baikal, Russia _database_code_amcsd 0007059 16.0299 16.0299 7.3056 90 90 120 R3m atom x y z occ Uiso NaX 0 0 .2237 .842 .0186 CaX 0 0 .2237 .043 .0186 KX 0 0 .2237 .027 .0186 CrY .12337 .061675 .63710 .580 .0045 V3+Y .12337 .061675 .63710 .261 .0045 MgY .12337 .061675 .63710 .121 .0045 AlY .12337 .061675 .63710 .028 .0045 Fe2+Y .12337 .061675 .63710 .007 .0045 ZnY .12337 .061675 .63710 .003 .0045 Ti4+Y .12337 .061675 .63710 .001 .0045 AlZ .29791 .26194 .60892 .440 .0055 MgZ .29791 .26194 .60892 .287 .0055 CrZ .29791 .26194 .60892 .272 .0055 Fe2+Z .29791 .26194 .60892 .001 .0055 SiT .19027 .18858 0 .978 .0040 AlT .19027 .18858 0 .022 .0040 B .1100 .2200 .4543 .0054 O1W 0 0 .7654 .639 .0062 F1W 0 0 .7654 .361 .0062 O2 .06041 .12082 .4887 .0068 OH3V .2570 .1285 .5097 .979 .0100 O3V .2570 .1285 .5097 .021 .0100 O4 .09276 .18552 .0718 .0098 O5 .1829 .09145 .0918 .0088 O6 .19186 .18238 .7793 .0073 O7 .28339 .28328 .0737 .0087 O8 .20787 .26860 .4380 .0103