Phlogopite Laurora A, Brigatti M F, Mottana A, Malferrari D, Caprilli E American Mineralogist 92 (2007) 468-480 Crystal chemistry of trioctahedral micas in alkaline and subalkaline volcanic rocks: A case study from Mt. Sassetto (Tolfa district, Latium, central Italy) Locality: Mt. Sassetto, Tolfa district, Latium, Italy Sample: MS4 Note: 2M_1 polytype _database_code_amcsd 0004293 5.3368 9.2377 20.086 90 95.128 90 C2/c atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) KA 0 .0842 .25 .89 .036 .033 .033 .040 0 .004 0 NaA 0 .0842 .25 .07 .036 .033 .033 .040 0 .004 0 MgM1 .75 .25 0 .5 .014 .012 .011 .018 .002 .002 .001 Fe2+M1 .75 .25 0 .37 .014 .012 .011 .018 .002 .002 .001 TiM1 .75 .25 0 .13 .014 .012 .011 .018 .002 .002 .001 MgM2 .2400 .0800 .0000 .5 .015 .017 .012 .016 .006 .002 .002 Fe2+M2 .2400 .0800 .0000 .37 .015 .017 .012 .016 .006 .002 .002 TiM2 .2400 .0800 .0000 .13 .015 .017 .012 .016 .006 .002 .002 AlT1 .4620 .2503 .1380 .28 .010 .010 .009 .012 0 .001 0 SiT1 .4620 .2503 .1380 .72 .010 .010 .009 .012 0 .001 0 AlT2 .9639 .4175 .1380 .28 .010 .009 .009 .012 .001 .001 0 SiT2 .9639 .4175 .1380 .72 .010 .009 .009 .012 .001 .001 0 O11 .7370 .3190 .1661 .021 .019 .027 .016 -.006 .001 .002 O21 .2366 .3479 .1671 .021 .020 .026 .017 .006 .001 -.001 O22 .4447 .0833 .1672 .021 .030 .016 .018 -.001 .005 0 O31 .4301 .2499 .0546 .013 .015 .013 .012 .001 .002 .003 O32 .9384 .4192 .0549 .013 .013 .014 .012 .002 .002 .003 O41 .9342 .0828 .0501 .013 .014 .012 .013 .004 .002 .003