Dravite Bloodaxe E S, Hughes J M, Dyar M D, Grew E S, Guidotti C V American Mineralogist 84 (1999) 922-928 Linking structure and chemistry in the schorl-dravite series Sample O-T16-92 _database_code_amcsd 0002242 15.935 15.935 7.160 90 90 120 R3m atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) CaX 0 0 .25 .156 .0018 .0018 .0095 .0009 0 0 NaX 0 0 .25 .348 .0018 .0018 .0095 .0009 0 0 KX 0 0 .25 .015 .0018 .0018 .0095 .0009 0 0 AlY .27167 .54334 .3250 .406 .00057 .00075 .0042 .000375 .00030 .00060 MgY .27167 .54334 .3250 .219 .00057 .00075 .0042 .000375 .00030 .00060 FeY .27167 .54334 .3250 .343 .00057 .00075 .0042 .000375 .00030 .00060 TiY .27167 .54334 .3250 .023 .00057 .00075 .0042 .000375 .00030 .00060 VY .27167 .54334 .3250 .002 .00057 .00075 .0042 .000375 .00030 .00060 CrY .27167 .54334 .3250 .003 .00057 .00075 .0042 .000375 .00030 .00060 MnY .27167 .54334 .3250 .002 .00057 .00075 .0042 .000375 .00030 .00060 AlZ .29798 .26150 .6368 .883 .00061 .00055 .0023 .00026 -.00005 .00005 MgZ .29798 .26150 .6368 .117 .00061 .00055 .0023 .00026 -.00005 .00005 SiT .19175 .18990 .0266 .00059 .00065 .00245 .00025 -.00005 -.00016 B .1098 .2196 .4788 .0012 .0010 .0028 .0005 .00000 .00000 O1 0 0 .8024 .846 .0023 .0023 .007 .00115 0 0 OH1 0 0 .8024 .094 .0023 .0023 .007 .00115 0 0 F1 0 0 .8024 .060 .0023 .0023 .007 .00115 0 0 O2 .0615 .1230 .5118 .0016 .0011 .0056 .00055 .00055 .0001 OH3 .2646 .1323 .5360 .0029 .0013 .0035 .00145 .0001 .00005 O4 .0931 .1862 .0968 .0010 .0020 .0034 .0010 .0000 .00000 O5 .1860 .0930 .1191 .0016 .00078 .0045 .0008 .0003 .00015 O6 .1965 .1862 .8015 .00133 .00132 .0026 .00075 -.00015 -.00005 O7 .2853 .2855 .1048 .00083 .00081 .0042 .000235 -.0001 -.0001 O8 .2093 .2702 .4659 .00067 .00113 .0053 .00055 -.00015 .00045