Pigeonite Domeneghetti M C, Zema M, Tazzoli V American Mineralogist 90 (2005) 1816-1823 Kinetics of Fe2+-Mg order-disorder in P2_1/c pigeonite Locality: Parana, Brazil Sample: N.35, annealed at T = 800 C for t = 10 min _database_code_amcsd 0003975 9.7113 8.9455 5.2504 90 108.478 90 P2_1/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) MgM2A .255273 .016803 .227659 .1940 .009749 .011409 .006594 .000368 .000639 .001878 FeM2A .255273 .016803 .227659 .5868 .009749 .011409 .006594 .000368 .000639 .001878 CaM2A .255273 .016803 .227659 .0691 .009749 .011409 .006594 .000368 .000639 .001878 MnM2A .255273 .016803 .227659 .0252 .009749 .011409 .006594 .000368 .000639 .001878 NaM2A .255273 .016803 .227659 .0030 .009749 .011409 .006594 .000368 .000639 .001878 CaM2B .254427 .049023 .251648 .1218 .013163 MgM1 .250421 .654547 .231553 .7236 .007633 .007059 .007765 .000153 .002499 .000409 Fe2+M1 .250421 .654547 .231553 .2478 .007633 .007059 .007765 .000153 .002499 .000409 Fe3+M1 .250421 .654547 .231553 .0149 .007633 .007059 .007765 .000153 .002499 .000409 TiM1 .250421 .654547 .231553 .0100 .007633 .007059 .007765 .000153 .002499 .000409 MnM1 .250421 .654547 .231553 .0037 .007633 .007059 .007765 .000153 .002499 .000409 SiA .042728 .340529 .276842 .005722 .006601 .010163 -.000514 .003451 -.000669 SiB .549408 .837441 .238590 .9840 .006185 .006540 .007807 -.001055 .002770 -.000937 AlB .549408 .837441 .238590 .0160 .006185 .006540 .007807 -.001055 .002770 -.000937 O1A .867691 .338397 .168973 .006260 .010069 .009779 .000096 .002806 -.000037 O2A .121696 .499345 .331982 .012183 .008837 .013414 -.003333 .005964 -.001160 O3A .104148 .261970 .577441 .008445 .021896 .020595 .000713 .004436 .013716 O1B .373681 .836801 .134681 .006936 .010533 .009855 .000665 .003311 .000131 O2B .629029 .987404 .373158 .014233 .012389 .021237 -.006056 .010025 -.007529 O3B .604749 .709205 .481128 .007195 .020652 .013052 .000171 .003281 .007756