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, untreated _database_code_amcsd 0003978 9.7060 8.9400 5.2460 90 108.504 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 .255365 .016605 .227587 .1420 .009927 .010615 .006656 .000291 .000759 .001979 FeM2A .255365 .016605 .227587 .6379 .009927 .010615 .006656 .000291 .000759 .001979 CaM2A .255365 .016605 .227587 .0542 .009927 .010615 .006656 .000291 .000759 .001979 MnM2A .255365 .016605 .227587 .0260 .009927 .010615 .006656 .000291 .000759 .001979 NaM2A .255365 .016605 .227587 .0030 .009927 .010615 .006656 .000291 .000759 .001979 CaM2B .253447 .046314 .249257 .1369 .013235 MgM1 .250414 .654659 .231720 .7772 .008103 .006947 .007671 .000188 .002591 .000414 Fe2+M1 .250414 .654659 .231720 .1952 .008103 .006947 .007671 .000188 .002591 .000414 Fe3+M1 .250414 .654659 .231720 .0148 .008103 .006947 .007671 .000188 .002591 .000414 TiM1 .250414 .654659 .231720 .0101 .008103 .006947 .007671 .000188 .002591 .000414 MnM1 .250414 .654659 .231720 .0027 .008103 .006947 .007671 .000188 .002591 .000414 SiA .042736 .340543 .276460 .006109 .006416 .009758 -.000504 .003425 -.000622 SiB .549431 .837380 .238556 .9840 .006400 .006352 .007687 -.001007 .002819 -.000864 AlB .549431 .837380 .238556 .0160 .006400 .006352 .007687 -.001007 .002819 -.000864 O1A .867507 .338111 .168478 .006619 .009221 .009472 .000054 .002614 -.000108 O2A .121595 .499631 .331923 .012645 .008615 .013097 -.003420 .006371 -.001585 O3A .104176 .261212 .577016 .008638 .021678 .020693 .000553 .004276 .013372 O1B .373604 .836508 .134486 .007077 .009518 .009848 .000319 .002960 -.000066 O2B .628803 .987734 .372269 .014541 .011853 .020018 -.005924 .010184 -.007125 O3B .604947 .709248 .481184 .007931 .019193 .013421 .000503 .003081 .007875