Oxy-dravite Bosi F, Skogby H American Mineralogist 98 (2013) 1442-1448 Oxy-dravite, Na(Al2Mg)(Al5Mg)(Si6O18)(BO3)3(OH)3O, a new mineral species of the tourmaline supergroup Locality: Osarara, Narok district, Kenya _database_code_amcsd 0020259 15.9273 15.9273 7.20010 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 .22939 .830 .0223 .0217 .0217 .0235 .0108 .000 .000 KX 0 0 .22939 .020 .0223 .0217 .0217 .0235 .0108 .000 .000 AlY .12223 .061116 .63657 .447 .00881 .00895 .00675 .01145 .00448 -.00316 -.00158 MgY .12223 .061116 .63657 .343 .00881 .00895 .00675 .01145 .00448 -.00316 -.00158 FeY .12223 .061116 .63657 .203 .00881 .00895 .00675 .01145 .00448 -.00316 -.00158 TiY .12223 .061116 .63657 .007 .00881 .00895 .00675 .01145 .00448 -.00316 -.00158 AlZ .297683 .261493 .61014 .825 .00552 .00531 .00536 .00583 .00262 -.00008 .00039 MgZ .297683 .261493 .61014 .172 .00552 .00531 .00536 .00583 .00262 -.00008 .00039 FeZ .297683 .261493 .61014 .003 .00552 .00531 .00536 .00583 .00262 -.00008 .00039 B .10989 .21978 .45430 .00626 .0054 .0060 .0076 .0030 .00027 .0005 Si .191532 .189631 0 .00490 .00458 .00429 .00590 .00226 -.00054 -.00061 O1 0 0 .7698 .76 .0110 .0127 .0127 .0075 .00637 .000 .000 OH1 0 0 .7698 .24 .0110 .0127 .0127 .0075 .00637 .000 .000 O2 .06076 .12151 .48724 .00918 .0112 .0042 .0098 .00210 .00044 .0009 O3 .26112 .13056 .50994 .01206 .0221 .0124 .0049 .0110 .0008 .00040 H3 .2453 .1227 .396 .018 O4 .09356 .18712 .07152 .00936 .0070 .0140 .0094 .00699 -.00075 -.0015 O5 .18445 .09223 .09252 .00900 .0148 .0066 .0083 .00740 .0016 .00080 O6 .19447 .18433 .77729 .00751 .0090 .0089 .0054 .00505 -.00081 -.00140 O7 .28509 .28474 .07754 .00776 .0064 .0053 .0084 .00047 -.00179 -.00106 O8 .20920 .27005 .43936 .00909 .0039 .0088 .0140 .00275 .00051 .00227