Spessartine Gramaccioli C M, Pilati T, Demartin F, Acta Crystallographica B58 (2002) 965-969 Atomic displacement parameters for spessartine Mn3Al2Si3O12 and their lattice-dynamical interpretation Locality: Elba Isle, Campo, Italy _database_code_amcsd 0009927 11.630 11.630 11.630 90 90 90 Ia3d atom x y z Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) AlY 0 0 0 .350 .00443 .00443 .00443 -.00030 -.00030 -.00030 MnX 0 .25 .125 .611 .00923 .00923 .00476 .00174 0 0 SiZ .375 0 .25 .307 .00350 .00407 .00407 0 0 0 O .03473 .04789 .65210 .420 .00540 .00620 .00430 .00050 -.00050 -.00040