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 = 30 min _database_code_amcsd 0003965 9.7118 8.9442 5.2484 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 .255178 .016731 .227992 .1551 .009961 .010658 .006542 .000424 .000539 .001749 FeM2A .255178 .016731 .227992 .6248 .009961 .010658 .006542 .000424 .000539 .001749 CaM2A .255178 .016731 .227992 .0647 .009961 .010658 .006542 .000424 .000539 .001749 MnM2A .255178 .016731 .227992 .0261 .009961 .010658 .006542 .000424 .000539 .001749 NaM2A .255178 .016731 .227992 .0029 .009961 .010658 .006542 .000424 .000539 .001749 CaM2B .254518 .048988 .249693 .1265 .011822 MgM1 .250455 .654629 .231946 .7613 .007900 .006743 .007402 .000044 .002435 .000374 Fe2+M1 .250455 .654629 .231946 .2107 .007900 .006743 .007402 .000044 .002435 .000374 Fe3+M1 .250455 .654629 .231946 .0149 .007900 .006743 .007402 .000044 .002435 .000374 TiM1 .250455 .654629 .231946 .0100 .007900 .006743 .007402 .000044 .002435 .000374 MnM1 .250455 .654629 .231946 .0030 .007900 .006743 .007402 .000044 .002435 .000374 SiA .042790 .340603 .276138 .005990 .006121 .010041 -.000501 .003395 -.000624 SiB .549378 .837484 .238604 .9840 .006307 .006105 .007522 -.001082 .002733 -.000976 AlB .549378 .837484 .238604 .0160 .006307 .006105 .007522 -.001082 .002733 -.000976 O1A .867607 .338152 .168397 .006136 .009434 .009516 .000266 .002695 -.000189 O2A .121617 .499487 .331951 .012329 .008561 .013115 -.003371 .006020 -.001490 O3A .104127 .261162 .575990 .008378 .021988 .020827 -.000004 .003555 .013592 O1B .373598 .836558 .134631 .006870 .009857 .009276 .000853 .003161 -.000025 O2B .628802 .987730 .372164 .013914 .012181 .020690 -.005909 .009799 -.007734 O3B .604690 .709516 .481112 .007572 .019643 .013321 .000531 .003398 .008103