Muscovite-2M1 Brigatti M F, Frigieri P, Poppi L American Mineralogist 83 (1998) 775-785 Crystal chemistry of Mg-, Fe-bearing muscovites-2M1 Sample B1b from peraluminous granites at Northern Victoria Land, Antarctica _database_code_amcsd 0002020 5.187 9.004 20.036 90 95.73 90 C2/c atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) K 0 .09854 .25 .94 .0177 .00558 .00103 0 .00038 0 Na 0 .09854 .25 .06 .0177 .00558 .00103 0 .00038 0 Si1 .45172 .25839 .13550 .77 .0052 .00150 .00038 .00009 .00009 .00000 Al1 .45172 .25839 .13550 .23 .0052 .00150 .00038 .00009 .00009 .00000 Si2 .96512 .42959 .13547 .77 .0055 .00147 .00038 .00000 .00021 .00006 Al2 .96512 .42959 .13547 .23 .0055 .00147 .00038 .00000 .00021 .00006 Ti2 .24870 .08287 .00003 .03 .0059 .00169 .00043 .00003 .00017 .00006 Fe2 .24870 .08287 .00003 .03 .0059 .00169 .00043 .00003 .00017 .00006 Mg2 .24870 .08287 .00003 .04 .0059 .00169 .00043 .00003 .00017 .00006 Al2 .24870 .08287 .00003 .90 .0059 .00169 .00043 .00003 .00017 .00006 Al1 .75 .25 0 .03 H .873 .147 .060 .14 O11 .7490 .3121 .15786 .0108 .0047 .00067 -.0018 -.00003 .00051 O21 .2489 .3692 .16888 .0106 .0040 .00057 .0017 .00014 -.00019 O22 .4193 .0931 .16832 .0155 .0027 .00059 .0006 .00063 .00002 O31 .3846 .2517 .05348 .0084 .0021 .00048 .0000 .00023 .00010 O32 .9613 .4436 .05350 .0071 .0025 .00048 .0004 .00019 .00009 O4 .9577 .0618 .05033 .98 .0082 .0026 .00058 -.0006 .00058 -.00029 F4 .9577 .0618 .05033 .02 .0082 .0026 .00058 -.0006 .00058 -.00029