Muscovite Guven N Zeitschrift fur Kristallographie 134 (1971) 196-212 The crystal structures of 2M1 phengite and 2M1 muscovite Note: sample 2M1 muscovite Locality: pegmatite in Georgia, USA _database_code_amcsd 0019602 5.1906 9.0080 20.0470 90 95.757 90 C2/c atom x y z occ Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) K 0 .0985 .25 .86 1.60 .0161 .0050 .0009 0 .0004 0 Na 0 .0985 .25 .10 1.60 .0161 .0050 .0009 0 .0004 0 Al .2496 .0834 .9999 .95 .47 .0044 .0009 .00037 -.00003 .0002 .00014 Fe .2496 .0834 .9999 .02 .47 .0044 .0009 .00037 -.00003 .0002 .00014 Mg .2496 .0834 .9999 .03 .47 .0044 .0009 .00037 -.00003 .0002 .00014 AlT1 .9648 .4295 .1355 .25 .54 .0047 .0015 .00037 .0002 .0001 .0000 SiT1 .9648 .4295 .1355 .75 .54 .0047 .0015 .00037 .0002 .0001 .0000 AlT2 .4510 .2584 .1355 .25 .54 .0049 .0015 .00041 -.0001 .0002 .0000 SiT2 .4510 .2584 .1355 .75 .54 .0049 .0015 .00041 -.0001 .0002 .0000 Oa .9613 .4435 .0540 .84 .006 .0027 .0006 .0004 .0001 .0003 Ob .3850 .2519 .0537 .77 .007 .0020 .0006 .0002 .0001 .0000 Oc .4174 .0930 .1685 1.07 .012 .0031 .0007 .0006 .0005 .0000 Od .7513 .3110 .1575 1.34 .013 .0049 .0007 .0010 .0008 .0003 Oe .2522 .3705 .1689 1.17 .013 .0034 .0006 .0004 -.0002 -.0005 OH .9564 .0630 .0505 .75 .008 .002 .0004 .0002 -.0002 -.0003