Muscovite-2M1 Martin-Ramos JD, Rodriguez-Gallego M Mineralogical Magazine 46 (1982) 269-272 Chromian mica from Sierra Nevada, Spain Note: y-coordinates of T2 and M1 sites altered Locality: Sierra Nevada, Spain _database_code_amcsd 0014475 5.2116 9.045 19.97 90 95.7 90 C2/c atom x y z occ Biso K 0 .0967 .25 .69 1.94 Na 0 .0967 .25 .06 1.94 Ca 0 .0967 .25 .13 1.94 Al1 .2489 .0826 .0001 .61 .64 Cr1 .2489 .0826 .0001 .08 .64 Mg1 .2489 .0826 .0001 .27 .64 Fe1 .2489 .0826 .0001 .04 .64 AlT1 .9635 .4296 .1353 .23 .56 SiT1 .9635 .4296 .1353 .77 .56 AlT2 .4517 .2589 .1355 .23 .63 SiT2 .4517 .2589 .1355 .77 .63 O1 .9558 .4386 .0546 1.09 O2 .3935 .2529 .0546 1.00 O3 .4390 .0934 .1692 1.29 O4 .7385 .3234 .1603 1.47 O5 .2384 .3611 .1694 1.13 OH .9547 .0654 .0515 .95 1.15