Fluor-dravite Camara F, Ottolini L, Hawthorne F C American Mineralogist 87 (2000) 1437-1442 Crystal chemistry of three tourmalines by SREF, EMPA and SIMS Sample: Crystal 3 Locality: a pegmatite at Minas Gerais, Brazil _database_code_amcsd 0002915 15.921 15.921 7.137 90 90 120 R3m atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) NaX 0 0 .8189 .81 .025 .025 .016 .012 0 0 CaX 0 0 .8189 .01 .025 .025 .016 .012 0 0 KX 0 0 .8189 .01 .025 .025 .016 .012 0 0 Fe2Y .0622 .9378 .4242 .30 .006 .006 .008 .002 .001 -.001 MgY .0622 .9378 .4242 .20 .006 .006 .008 .002 .001 -.001 AlY .0622 .9378 .4242 .26 .006 .006 .008 .002 .001 -.001 LiY .0622 .9378 .4242 .22 .006 .006 .008 .002 .001 -.001 TiY .0622 .9378 .4242 .02 .006 .006 .008 .002 .001 -.001 AlZ .2611 .2978 .4414 .006 .006 .004 .003 -.001 .000 SiT .1899 .1919 .0529 .96 .004 .004 .004 .002 .000 .000 B .8902 .1098 .5977 .006 .006 .007 .003 .000 .000 O1 0 0 .2714 .03 .062 .062 .010 .031 0 0 OH1 0 0 .2714 .42 .062 .062 .010 .031 0 0 F1 0 0 .2714 .55 .062 .062 .010 .031 0 0 O2 .9389 .0611 .5687 .022 .022 .010 .020 .000 .000 OH3 .1343 .8657 .5432 .010 .010 .006 .001 .000 .000 O4 .9068 .0932 .9822 .007 .007 .007 .000 .000 .000 O5 .0932 .9068 .9603 .007 .007 .007 .000 .000 .000 O6 .1870 .1971 .2768 .009 .007 .004 .003 .000 .000 O7 .2857 .2855 .9727 .006 .005 .006 .001 .001 .000 O8 .2706 .2099 .6115 .010 .005 .008 .004 -.003 -.001