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, untreated _database_code_amcsd 0003962 9.7071 8.9435 5.2481 90 108.483 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 .255192 .017045 .228309 .1437 .010112 .011311 .007101 .000456 .000647 .001611 FeM2A .255192 .017045 .228309 .6362 .010112 .011311 .007101 .000456 .000647 .001611 CaM2A .255192 .017045 .228309 .0784 .010112 .011311 .007101 .000456 .000647 .001611 MnM2A .255192 .017045 .228309 .0259 .010112 .011311 .007101 .000456 .000647 .001611 NaM2A .255192 .017045 .228309 .0030 .010112 .011311 .007101 .000456 .000647 .001611 CaM2B .254036 .049506 .249442 .1128 .011423 MgM1 .250490 .654727 .232121 .7764 .008018 .006763 .007727 .000121 .002449 .000458 Fe2+M1 .250490 .654727 .232121 .1960 .008018 .006763 .007727 .000121 .002449 .000458 Fe3+M1 .250490 .654727 .232121 .0147 .008018 .006763 .007727 .000121 .002449 .000458 TiM1 .250490 .654727 .232121 .0101 .008018 .006763 .007727 .000121 .002449 .000458 MnM1 .250490 .654727 .232121 .0027 .008018 .006763 .007727 .000121 .002449 .000458 SiA .042638 .340507 .275819 .006146 .006198 .009999 -.000581 .003367 -.000616 SiB .549269 .837496 .238663 .9840 .006599 .006249 .007780 -.001068 .002828 -.000944 AlB .549269 .837496 .238663 .0160 .006599 .006249 .007780 -.001068 .002828 -.000944 O1A .867633 .338142 .168299 .006561 .009023 .009713 .000532 .002613 .000062 O2A .121624 .499486 .332181 .012521 .008224 .013628 -.003275 .005907 -.001811 O3A .104270 .261080 .576279 .009289 .023267 .021057 .000787 .004399 .014429 O1B .373603 .836609 .134765 .007080 .009612 .009962 .000376 .002903 -.000022 O2B .628732 .987868 .372233 .014739 .011594 .021224 -.006085 .010302 -.007512 O3B .604937 .709499 .481649 .008494 .021313 .012807 .000717 .003991 .007685