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 = 360 min _database_code_amcsd 0003982 9.7074 8.9415 5.2468 90 108.485 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 .255270 .016773 .227820 .1570 .009797 .011102 .006885 .000386 .000679 .001637 FeM2A .255270 .016773 .227820 .6232 .009797 .011102 .006885 .000386 .000679 .001637 CaM2A .255270 .016773 .227820 .0666 .009797 .011102 .006885 .000386 .000679 .001637 MnM2A .255270 .016773 .227820 .0258 .009797 .011102 .006885 .000386 .000679 .001637 NaM2A .255270 .016773 .227820 .0030 .009797 .011102 .006885 .000386 .000679 .001637 CaM2B .254799 .049106 .249403 .1244 .013358 MgM1 .250463 .654616 .231631 .7611 .007924 .007282 .007881 .000176 .002620 .000379 Fe2+M1 .250463 .654616 .231631 .2110 .007924 .007282 .007881 .000176 .002620 .000379 Fe3+M1 .250463 .654616 .231631 .0148 .007924 .007282 .007881 .000176 .002620 .000379 TiM1 .250463 .654616 .231631 .0101 .007924 .007282 .007881 .000176 .002620 .000379 MnM1 .250463 .654616 .231631 .0030 .007924 .007282 .007881 .000176 .002620 .000379 SiA .042706 .340582 .276597 .005926 .006632 .009990 -.000471 .003338 -.000611 SiB .549432 .837431 .238503 .9840 .006322 .006627 .007951 -.000971 .002810 -.000869 AlB .549432 .837431 .238503 .0160 .006322 .006627 .007951 -.000971 .002810 -.000869 O1A .867574 .338142 .168858 .006678 .009500 .009793 .000234 .002697 -.000181 O2A .121712 .499262 .332009 .012948 .008632 .013529 -.003046 .006316 -.001521 O3A .104119 .261495 .577342 .008467 .022841 .021137 .000755 .004297 .013864 O1B .373585 .836679 .134626 .007116 .009783 .010135 .000401 .003060 -.000094 O2B .628958 .987497 .372795 .014674 .011892 .020790 -.005774 .010092 -.007110 O3B .604788 .709179 .480857 .007988 .020068 .013646 .001061 .003756 .007464