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 = 800 C for t = 18 min _database_code_amcsd 0003976 9.7134 8.9482 5.2485 90 108.463 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 .255318 .016718 .227655 .1967 .010215 .011390 .007019 .000503 .000847 .001955 FeM2A .255318 .016718 .227655 .5843 .010215 .011390 .007019 .000503 .000847 .001955 CaM2A .255318 .016718 .227655 .0687 .010215 .011390 .007019 .000503 .000847 .001955 MnM2A .255318 .016718 .227655 .0253 .010215 .011390 .007019 .000503 .000847 .001955 NaM2A .255318 .016718 .227655 .0029 .010215 .011390 .007019 .000503 .000847 .001955 CaM2B .254205 .048504 .249535 .1221 .012509 MgM1 .250432 .654512 .231510 .7194 .008103 .007041 .007952 .000132 .002797 .000337 Fe2+M1 .250432 .654512 .231510 .2518 .008103 .007041 .007952 .000132 .002797 .000337 Fe3+M1 .250432 .654512 .231510 .0149 .008103 .007041 .007952 .000132 .002797 .000337 TiM1 .250432 .654512 .231510 .0100 .008103 .007041 .007952 .000132 .002797 .000337 MnM1 .250432 .654512 .231510 .0038 .008103 .007041 .007952 .000132 .002797 .000337 SiA .042812 .340504 .276914 .006148 .006390 .010133 -.000593 .003617 -.000705 SiB .549439 .837435 .238634 .9840 .006511 .006434 .007668 -.001058 .002949 -.000937 AlB .549439 .837435 .238634 .0160 .006511 .006434 .007668 -.001058 .002949 -.000937 O1A .867736 .338408 .169294 .006634 .009789 .009514 .000122 .002695 -.000193 O2A .121657 .499294 .331931 .012565 .008626 .013337 -.003507 .005779 -.001453 O3A .104055 .262089 .577934 .008809 .022918 .021238 .000864 .004840 .013806 O1B .373798 .836847 .135065 .007306 .010080 .009768 .000424 .003204 .000065 O2B .628907 .987307 .373193 .015064 .012254 .021388 -.006425 .010378 -.007748 O3B .604801 .708909 .480541 .008113 .021057 .012654 .000679 .003626 .007938