Manganhumite Francis C A, Ribbe P H American Mineralogist 63 (1978) 874-877 Crystal structures of the humite minerals: V. Magnesian manganhumite _database_code_amcsd 0000686 4.815 10.580 21.448 90 90 90 Pbnm atom x y z occ Biso Mn1 .0015 .3797 .1758 .70 .90 Mg1 .0015 .3797 .1758 .30 .90 Mn26 .5141 .1583 .25 .63 Mn25 .0085 .0974 .1090 .93 Mg3 .4907 .8657 .0270 .75 .84 Mn3 .4907 .8657 .0270 .25 .84 Si1 .0750 .9699 .25 .63 Si2 .5753 .2844 .1043 .57 O23 .7150 .2178 .1659 .97 O13 .2168 .0381 .1896 .80 O24 .7197 .2130 .0447 .86 O21 .2432 .2850 .1029 .89 O12 .2785 .3293 .25 .72 O11 .7421 .9680 .25 .84 O22 .7778 .9252 .1031 .75 OH .2631 .0306 .0333 .87