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.13, annealed at T = 650 C for t = 80 min _database_code_amcsd 0003979 9.7096 8.9413 5.2473 90 108.515 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 .255193 .016975 .228494 .1463 .009691 .010873 .007715 .000238 .000459 .001766 FeM2A .255193 .016975 .228494 .6341 .009691 .010873 .007715 .000238 .000459 .001766 CaM2A .255193 .016975 .228494 .0678 .009691 .010873 .007715 .000238 .000459 .001766 MnM2A .255193 .016975 .228494 .0262 .009691 .010873 .007715 .000238 .000459 .001766 NaM2A .255193 .016975 .228494 .0029 .009691 .010873 .007715 .000238 .000459 .001766 CaM2B .253245 .048697 .251796 .1227 .014538 MgM1 .250465 .654681 .232393 .7688 .007855 .006868 .008766 .000158 .002628 .000406 Fe2+M1 .250465 .654681 .232393 .2033 .007855 .006868 .008766 .000158 .002628 .000406 Fe3+M1 .250465 .654681 .232393 .0150 .007855 .006868 .008766 .000158 .002628 .000406 TiM1 .250465 .654681 .232393 .0100 .007855 .006868 .008766 .000158 .002628 .000406 MnM1 .250465 .654681 .232393 .0029 .007855 .006868 .008766 .000158 .002628 .000406 SiA .042761 .340479 .275771 .006089 .005952 .010868 -.000540 .003430 -.000516 SiB .549368 .837519 .239149 .9840 .006394 .006074 .008631 -.000990 .002783 -.000936 AlB .549368 .837519 .239149 .0160 .006394 .006074 .008631 -.000990 .002783 -.000936 O1A .867619 .338101 .167933 .006764 .008768 .010073 .000290 .002410 -.000013 O2A .121747 .499321 .332704 .012277 .007897 .014848 -.002828 .006316 -.001874 O3A .104237 .261289 .576788 .009362 .023568 .021167 .000692 .004426 .014420 O1B .373586 .836583 .135285 .006691 .009531 .010922 .000396 .003193 .000256 O2B .628873 .987860 .372183 .014925 .011537 .021583 -.005813 .010988 -.007733 O3B .604905 .709339 .480990 .008298 .020959 .014406 .000981 .003967 .008500