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 = 600 min _database_code_amcsd 0003970 9.7132 8.9469 5.2500 90 108.484 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 .255246 .016629 .227672 .1750 .009791 .010907 .006719 .000379 .000628 .001970 FeM2A .255246 .016629 .227672 .6051 .009791 .010907 .006719 .000379 .000628 .001970 CaM2A .255246 .016629 .227672 .0599 .009791 .010907 .006719 .000379 .000628 .001970 MnM2A .255246 .016629 .227672 .0255 .009791 .010907 .006719 .000379 .000628 .001970 NaM2A .255246 .016629 .227672 .0030 .009791 .010907 .006719 .000379 .000628 .001970 CaM2B .254291 .048103 .250414 .1314 .012696 MgM1 .250428 .654582 .231734 .7435 .007591 .006704 .007556 .000036 .002498 .000301 Fe2+M1 .250428 .654582 .231734 .2283 .007591 .006704 .007556 .000036 .002498 .000301 Fe3+M1 .250428 .654582 .231734 .0148 .007591 .006704 .007556 .000036 .002498 .000301 TiM1 .250428 .654582 .231734 .0101 .007591 .006704 .007556 .000036 .002498 .000301 MnM1 .250428 .654582 .231734 .0033 .007591 .006704 .007556 .000036 .002498 .000301 SiA .042757 .340551 .276543 .005864 .006267 .010062 -.000568 .003261 -.000721 SiB .549410 .837400 .238606 .9840 .006155 .006282 .007724 -.001111 .002557 -.000977 AlB .549410 .837400 .238606 .0160 .006155 .006282 .007724 -.001111 .002557 -.000977 O1A .867749 .338298 .168910 .006141 .009499 .009864 .000130 .002477 -.000191 O2A .121573 .499395 .331973 .012475 .008450 .013546 -.003280 .006044 -.001391 O3A .104248 .261293 .576855 .007737 .022722 .021223 .000510 .004022 .013731 O1B .373811 .836743 .134997 .006923 .009367 .010093 .000346 .002885 .000057 O2B .628683 .987534 .372746 .014223 .011263 .021445 -.005741 .009830 -.007605 O3B .604712 .709018 .481196 .007526 .019375 .013240 .000665 .003244 .007552