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 = 20 min _database_code_amcsd 0003964 9.7057 8.9396 5.2453 90 108.478 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 .255195 .016378 .227770 .1539 .009633 .010408 .006359 .000099 .000355 .001719 FeM2A .255195 .016378 .227770 .6259 .009633 .010408 .006359 .000099 .000355 .001719 CaM2A .255195 .016378 .227770 .0417 .009633 .010408 .006359 .000099 .000355 .001719 MnM2A .255195 .016378 .227770 .0259 .009633 .010408 .006359 .000099 .000355 .001719 NaM2A .255195 .016378 .227770 .0030 .009633 .010408 .006359 .000099 .000355 .001719 CaM2B .254515 .046766 .248789 .1496 .012800 MgM1 .250434 .654621 .232036 .7650 .007862 .007063 .007474 .000191 .002392 .000402 Fe2+M1 .250434 .654621 .232036 .2072 .007862 .007063 .007474 .000191 .002392 .000402 Fe3+M1 .250434 .654621 .232036 .0148 .007862 .007063 .007474 .000191 .002392 .000402 TiM1 .250434 .654621 .232036 .0101 .007862 .007063 .007474 .000191 .002392 .000402 MnM1 .250434 .654621 .232036 .0030 .007862 .007063 .007474 .000191 .002392 .000402 SiA .042741 .340553 .275997 .005922 .006463 .010119 -.000549 .003336 -.000667 SiB .549321 .837429 .238665 .9840 .006232 .006442 .007641 -.001078 .002677 -.000971 AlB .549321 .837429 .238665 .0160 .006232 .006442 .007641 -.001078 .002677 -.000971 O1A .867567 .338158 .168337 .006511 .009185 .009683 .000298 .002699 .000057 O2A .121531 .499429 .332093 .012442 .008799 .013176 -.003649 .006069 -.001310 O3A .104077 .261054 .576241 .008430 .023232 .020936 .000398 .004143 .013858 O1B .373598 .836571 .134869 .006819 .009626 .009984 .000187 .003004 -.000047 O2B .628675 .987776 .371983 .014459 .011626 .021699 -.006207 .010426 -.007520 O3B .604868 .709349 .481560 .007418 .019820 .013563 .000328 .003382 .007992