Annite Brigatti M F, Frigieri P, Ghezzo c, Poppi L American Mineralogist 85 (2000) 436-448 Crystal chemistry of Al-rich biotites coexisting with muscovites in peraluminous granites Sample: CC1 Locality: Frontier Mountains, Northern Victoria Land, Antarctica _database_code_amcsd 0002388 5.328 9.222 10.197 90 100.26 90 C2/m atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) KA 0 .5 0 .98 .0216 .0074 .0069 0 .0020 0 NaA 0 .5 0 .02 .0216 .0074 .0069 0 .0020 0 Fe2+1 0 0 .5 .62 .0050 .0018 .0025 0 .0011 0 Mg1 0 0 .5 .26 .0050 .0018 .0025 0 .0011 0 Fe2+2 0 .3334 .5 .37 .0041 .00232 .00221 0 .0004 0 Mg2 0 .3334 .5 .23 .0041 .00232 .00221 0 .0004 0 Ti2 0 .3334 .5 .08 .0041 .00232 .00221 0 .0004 0 Al2 0 .3334 .5 .32 .0041 .00232 .00221 0 .0004 0 SiT .0757 .16710 .22650 .67 .0047 .00180 .00192 .0000 .00060 .00009 AlT .0757 .16710 .22650 .33 .0047 .00180 .00192 .0000 .00060 .00009 O1 .0156 0 .1710 .0160 .0034 .0037 0 -.0010 0 O2 .3271 .2297 .1689 .0122 .0060 .0035 -.0027 .0021 -.0006 O3 .1326 .1693 .3921 .0108 .0036 .002 -.0002 -.0002 .0000 OH4 .1269 .5 .3977 .78 .0090 .0051 .0020 0 0 0 O4 .1269 .5 .3977 .22 .0090 .0051 .0020 0 0 0