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: MS14(2) Note: 2M_1 polytype _database_code_amcsd 0004306 5.3449 9.2375 20.095 90 95.143 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 .0843 .25 .93 .033 .031 .032 .037 0 .003 0 NaA 0 .0843 .25 .06 .033 .031 .032 .037 0 .003 0 MgM1 .75 .25 0 .48 .012 .009 .010 .016 .001 .002 -.001 Fe2+M1 .75 .25 0 .36 .012 .009 .010 .016 .001 .002 -.001 TiM1 .75 .25 0 .11 .012 .009 .010 .016 .001 .002 -.001 AlM1 .75 .25 0 .05 .012 .009 .010 .016 .001 .002 -.001 MgM2 .2412 .0803 .0000 .48 .013 .014 .011 .014 .005 .001 .001 Fe2+M2 .2412 .0803 .0000 .36 .013 .014 .011 .014 .005 .001 .001 TiM2 .2412 .0803 .0000 .11 .013 .014 .011 .014 .005 .001 .001 AlM2 .2412 .0803 .0000 .05 .013 .014 .011 .014 .005 .001 .001 AlT1 .4620 .2502 .1380 .28 .009 .009 .009 .011 .001 .001 0 SiT1 .4620 .2502 .1380 .72 .009 .009 .009 .011 .001 .001 0 AlT2 .9636 .4174 .1380 .28 .010 .009 .009 .011 .001 .001 0 SiT2 .9636 .4174 .1380 .72 .010 .009 .009 .011 .001 .001 0 O11 .7366 .3194 .1660 .019 .017 .025 .015 -.006 .001 .002 O21 .2364 .3479 .1671 .019 .017 .024 .016 .007 -.001 -.002 O22 .4442 .0837 .1671 .019 .029 .013 .015 .001 .004 .001 O31 .4306 .2498 .0548 .012 .012 .012 .011 .002 .001 .001 O32 .9385 .4189 .0549 .011 .011 .012 .011 .002 .002 .001 O41 .9346 .0823 .0503 .012 .013 .011 .013 .004 .001 .001