Dumortierite Alexander V D, Griffen D T, Martin T J American Mineralogist 71 (1986) 786-794 Crystal chemistry of some Fe- and Ti-poor dumortierites Sample: #10, USNM 96698, from Petaca, New Mexco, USA _database_code_amcsd 0001024 11.800 20.222 4.699 90 90 90 Pmcn atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Si1 .75 .4055 .0881 .0024 .0132 .0054 0 0 .0000 Si2 .5237 .3282 .5875 .99 .0058 .0089 .0057 -.0005 .0002 -.0002 Al1 .75 .2497 .3993 .91 .0031 .0100 .0824 0 0 -.0013 Al2 .6104 .4722 .5582 .98 .0023 .0076 .0054 .0006 .0002 -.0001 Al3 .491 .4308 .0599 .98 .0029 .0078 .0041 -.0010 .0002 .0001 Al4 .3577 .2892 .0577 .99 .0051 .0096 .0085 .0008 .0008 -.0008 B .25 .4153 .2325 .98 .0001 .0105 .0042 0 0 .0003 O1 .75 .4532 .3791 .0061 .0183 .0075 0 0 -.0044 O2 .75 .3267 .1503 .0078 .0173 .0137 0 0 .0027 O3 .6387 .4249 .8964 .0067 .0163 .0063 -.0025 -.0017 .0032 O4 .4355 .2821 .3997 .0079 .0175 .0089 .0008 .0005 -.0002 O5 .5491 .3933 .3969 .0107 .0105 .0054 .0024 -.0012 .0015 O6 .4544 .3505 .8827 .0114 .0123 .0081 -.0020 .0022 -.0024 O7 .6387 .2868 .6484 .0108 .0175 .0129 .0028 -.0035 .0010 O8 .25 .3506 .1701 .0001 .0092 .0281 0 0 -.0007 O9 .3511 .4486 .2553 .0037 .0122 .0179 -.0008 .0009 -.0032 O10 .25 .2724 .7615 .0051 .0159 .0057 0 0 -.0011 O11 .4661 .4881 .7512 .0036 .0139 .0044 -.0018 .0009 .0012