Institute of Experimental Mineralogy Russian Academy of Sciences ------------------------------------------------- 142432, Chernogolovka, Moscow district A.V. Chichagov +7(496)52-22320 *** *** W W W - X R A Y P O L *** *********************** SUDBURYITE 1, g-sudburyite PdSb Hexagonal P 6(3)/mmc Z = 2 P6(3)/mmc 16 .8 .1999 Ref.Str.: Wyckoff R.W.G. (1964) * Crystal Structures, 1, 123-124 L: Cabri, laflamme (1997) * Canad. Mineral., 12, 275 R: ATOMIC. The coordinates of atoms are considered to equel to those of breithauptite. N.A.D. Initial data from BDM-file Lattice parameters (cub. angs.,degr.): a = 4.06 alpha = 90.0 b = 4.06 beta = 90.0 c = 5.59 gamma = 120.0 Unit cell volume (cub. angs.) = 79.8 Molar volume ( cub.cm/mol.) = 24.03 Co-ordinates, thermal parameters, occupation for atomic positions: NoP x/a y/b z/c B(j) atom / occupation 1 0.0 0.0 0.0 0.0 Pd = 1.00 2 0.3333 0.6667 0.25 0.0 Sb = 1.00 Co-ordinates for all atomic positions : No NoP x/a y/b z/c 1 1 0.0 0.0 0.0 2 2 0.3333 0.6667 0.25 3 1 0.0 0.0 0.5 4 2 0.6667 0.3333 0.75 X-ray density (g/cm cub.) = 9.49 MU (1/cm) = 3326.299 Mass attenuation coefficient (cm**2/g) = 350.427 Selected interatomic distances (cation-anion,anion-anion): NoP Atom Rad.sph. C.N. Distance NoP N. (angs.) (angs.) 1 Pd 2.814 8 2.7291 2 2.7288 2 2.7291 2 2.795 1 2.795 1 2.7291 2 2.7288 2 2.7291 2 2 Sb 2.8 6 2.7291 1 2.7288 1 2.7291 1 2.7291 1 2.7288 1 2.7291 1 X-ray diffraction powder data (II), X-Ray W.L. = 1.78892(angs.): No H K L Theta 2*Theta S LPG MF F I int. ( degree ) *100 1 1 0 0 14.738 29.475 0.142 28.09 6 37.1 3644.8 2 1 0 1 17.49 34.979 0.168 19.4 12 74.3 20204.9 3 0 0 2 18.664 37.328 0.179 16.82 2 7.3 28.1 4 1 0 2 24.13 48.261 0.229 9.46 12 110.4 21726.6 5 1 1 0 26.143 52.287 0.246 7.88 6 145.6 15749.9 6 2 0 0 30.583 61.166 0.284 5.53 6 28.4 420.6 7 2 0 1 32.232 64.465 0.298 4.93 12 61.6 3520.5 8 1 0 3 32.907 65.814 0.304 4.71 12 61.1 3316.2 9 1 1 2 32.996 65.991 0.304 4.69 12 7.9 55.0 10 2 0 2 36.946 73.892 0.336 3.73 12 93.2 6101.2 11 0 0 4 39.795 79.59 0.358 3.28 2 122.8 1552.8 12 2 1 0 42.304 84.607 0.376 3.01 12 24.1 328.7 13 1 0 4 43.531 87.062 0.385 2.92 12 23.7 309.5 14 2 1 1 43.774 87.548 0.387 2.9 24 54.3 3218.6 15 2 0 3 44.386 88.773 0.391 2.86 12 53.9 1568.0 X-ray diffraction powder data (I)...X-Ray wave length = 1.78892 (angs.): No H K L Theta 2*Theta d I int I int.n. I p.h.n. H(Si) ( degree ) (angstrem) *100 *100 1 1 0 0 14.738 29.475 3.51606 3644.8 16.8 17.1 5.6 2 1 0 1 17.49 34.979 2.97626 20204.9 93.0 94.3 5.7 3 1 0 2 24.13 48.261 2.18794 21726.6 100.0 100.0 5.7 4 1 1 0 26.143 52.287 2.03 15749.9 72.5 72.1 5.8 5 2 0 0 30.583 61.166 1.75803 420.6 1.9 1.9 5.8 6 2 0 1 32.232 64.465 1.67705 3520.5 16.2 15.8 5.9 7 1 0 3 32.907 65.814 1.64643 3316.2 15.3 14.9 5.9 8 2 0 2 36.946 73.892 1.48813 6101.2 28.1 27.0 6.0 9 0 0 4 39.795 79.59 1.3975 1552.8 7.1 6.8 6.0 10 2 1 0 42.304 84.607 1.32895 328.7 1.5 1.4 6.1 11 1 0 4 43.531 87.062 1.29868 309.5 1.4 1.3 6.1 12 2 1 1 43.774 87.548 1.29291 3218.6 14.8 13.8 6.2 13 2 0 3 44.386 88.773 1.27872 1568.0 7.2 6.7 6.2 Reference: Chichagov A.V. et al. Information-Calculating System on Crystal Structure Data of Minerals (MINCRYST) - Kristallographiya, v.35, n.3, 1990, p.610-616 (in Russian) |