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 = 50 min _database_code_amcsd 0003966 9.7114 8.9473 5.2513 90 108.475 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 .255237 .016458 .227752 .1628 .009832 .010263 .006467 .000228 .000669 .001978 FeM2A .255237 .016458 .227752 .6172 .009832 .010263 .006467 .000228 .000669 .001978 CaM2A .255237 .016458 .227752 .0504 .009832 .010263 .006467 .000228 .000669 .001978 MnM2A .255237 .016458 .227752 .0256 .009832 .010263 .006467 .000228 .000669 .001978 NaM2A .255237 .016458 .227752 .0030 .009832 .010263 .006467 .000228 .000669 .001978 CaM2B .253810 .047303 .248865 .1409 .011389 MgM1 .250406 .654637 .231905 .7565 .007893 .006832 .007470 .000218 .002548 .000478 Fe2+M1 .250406 .654637 .231905 .2155 .007893 .006832 .007470 .000218 .002548 .000478 Fe3+M1 .250406 .654637 .231905 .0148 .007893 .006832 .007470 .000218 .002548 .000478 TiM1 .250406 .654637 .231905 .0101 .007893 .006832 .007470 .000218 .002548 .000478 MnM1 .250406 .654637 .231905 .0031 .007893 .006832 .007470 .000218 .002548 .000478 SiA .042738 .340550 .276215 .005950 .006317 .009821 -.000614 .003354 -.000574 SiB .549291 .837473 .238617 .9840 .006355 .006151 .007352 -.000987 .002710 -.000938 AlB .549291 .837473 .238617 .0160 .006355 .006151 .007352 -.000987 .002710 -.000938 O1A .867653 .338136 .168662 .006510 .009159 .009649 .000262 .002632 -.000044 O2A .121559 .499573 .332035 .013078 .007921 .014102 -.003259 .006603 -.001456 O3A .104157 .261208 .576601 .007971 .023237 .020596 .000275 .003929 .014404 O1B .373534 .836612 .134596 .007187 .009343 .009992 .000460 .002896 .000019 O2B .628802 .987827 .372569 .014486 .011598 .020944 -.005803 .010136 -.007057 O3B .604852 .709118 .481534 .007324 .020455 .012805 .000268 .003094 .007788