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 = 700 C for t = 90 min _database_code_amcsd 0003967 9.7087 8.9405 5.2468 90 108.496 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 .255218 .016478 .227696 .1723 .009708 .010333 .006363 .000283 .000529 .001827 FeM2A .255218 .016478 .227696 .6079 .009708 .010333 .006363 .000283 .000529 .001827 CaM2A .255218 .016478 .227696 .0520 .009708 .010333 .006363 .000283 .000529 .001827 MnM2A .255218 .016478 .227696 .0255 .009708 .010333 .006363 .000283 .000529 .001827 NaM2A .255218 .016478 .227696 .0030 .009708 .010333 .006363 .000283 .000529 .001827 CaM2B .254562 .047268 .248565 .1393 .011757 MgM1 .250428 .654596 .231772 .7477 .007858 .006802 .007508 .000155 .002528 .000453 Fe2+M1 .250428 .654596 .231772 .2243 .007858 .006802 .007508 .000155 .002528 .000453 Fe3+M1 .250428 .654596 .231772 .0147 .007858 .006802 .007508 .000155 .002528 .000453 TiM1 .250428 .654596 .231772 .0101 .007858 .006802 .007508 .000155 .002528 .000453 MnM1 .250428 .654596 .231772 .0032 .007858 .006802 .007508 .000155 .002528 .000453 SiA .042762 .340538 .276342 .005816 .006265 .009845 -.000562 .003324 -.000636 SiB .549342 .837438 .238697 .9840 .006371 .006137 .007362 -.001128 .002787 -.001044 AlB .549342 .837438 .238697 .0160 .006371 .006137 .007362 -.001128 .002787 -.001044 O1A .867667 .338264 .168694 .006401 .009375 .009084 .000371 .002511 -.000162 O2A .121428 .499568 .331890 .012573 .008123 .013352 -.003330 .005940 -.001799 O3A .104213 .261526 .576927 .008314 .022677 .020132 .000318 .003881 .013539 O1B .373637 .836677 .134863 .006829 .009743 .009696 .000180 .003122 -.000181 O2B .628726 .987748 .372520 .014526 .011821 .021272 -.006052 .010539 -.007734 O3B .604810 .709253 .481418 .007234 .020666 .012855 .000537 .003072 .007765