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, annealed at T = 750 C for t = 9 min _database_code_amcsd 0003987 9.7071 8.9425 5.2463 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 .255386 .016861 .227773 .1738 .009888 .011298 .006892 .000573 .000550 .001875 FeM2A .255386 .016861 .227773 .6067 .009888 .011298 .006892 .000573 .000550 .001875 CaM2A .255386 .016861 .227773 .0792 .009888 .011298 .006892 .000573 .000550 .001875 MnM2A .255386 .016861 .227773 .0256 .009888 .011298 .006892 .000573 .000550 .001875 NaM2A .255386 .016861 .227773 .0029 .009888 .011298 .006892 .000573 .000550 .001875 CaM2B .253983 .049861 .249172 .1116 .011967 MgM1 .250472 .654568 .231437 .7426 .008038 .007402 .007742 .000081 .002435 .000412 Fe2+M1 .250472 .654568 .231437 .2291 .008038 .007402 .007742 .000081 .002435 .000412 Fe3+M1 .250472 .654568 .231437 .0149 .008038 .007402 .007742 .000081 .002435 .000412 TiM1 .250472 .654568 .231437 .0100 .008038 .007402 .007742 .000081 .002435 .000412 MnM1 .250472 .654568 .231437 .0033 .008038 .007402 .007742 .000081 .002435 .000412 SiA .042781 .340544 .276939 .006008 .006603 .009983 -.000481 .003388 -.000685 SiB .549499 .837407 .238443 .9840 .006311 .006519 .007882 -.001010 .002816 -.000861 AlB .549499 .837407 .238443 .0160 .006311 .006519 .007882 -.001010 .002816 -.000861 O1A .867560 .338272 .169183 .006893 .009713 .009155 .000201 .002802 -.000276 O2A .121725 .499367 .331784 .012955 .008593 .013594 -.003590 .006479 -.001405 O3A .104015 .262078 .578104 .008426 .022430 .020490 .000198 .004085 .013388 O1B .373548 .836715 .134465 .007051 .009972 .009633 .000398 .002988 -.000168 O2B .629062 .987312 .372932 .014249 .012329 .020598 -.005805 .009906 -.007271 O3B .604799 .708806 .480798 .007915 .019111 .013706 .000425 .003154 .007400