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 *** *********************** TREVORITE 3, td-spinel invers, syn, f-oxospinelides, sf-spinel, s-magnetite, DF (Ni,Fe)Fe(2)O(4) Cubic F d3m Z = 8 Fd3m 29 .1 .15 Ref.Str.: Blesa M.C., Amador U., Moran E., Menendez N., Tornero J.D., Rodriguez-Carvajal J. (1993) * Solid State Ionics, 63 429-436 L: $Ni1.43 Fe1.7 O4$ R: N.A.D. Initial data from BDM-file Lattice parameters (cub. angs.,degr.): a = 8.3473 alpha = 90.0 b = 8.3473 beta = 90.0 c = 8.3473 gamma = 90.0 Unit cell volume (cub. angs.) = 581.62 Molar volume ( cub.cm/mol.) = 43.79 Co-ordinates, thermal parameters, occupation for atomic positions: NoP x/a y/b z/c B(j) atom / occupation 1 0.625 0.625 0.625 0.0 Fe = 0.41, Ni = 0.6 2 0.0 0.0 0.0 0.0 Fe = 0.89, Fe = 0.0 3 0.125 0.125 0.125 0.0 Ni = 0.12, Ni = 0.0 4 0.3798 0.3798 0.3798 0.0 O = 1.00 Co-ordinates for all atomic positions : No NoP x/a y/b z/c 1 1 0.625 0.625 0.625 2 2 0.0 0.0 0.0 3 3 0.125 0.125 0.125 4 4 0.3798 0.3798 0.3798 5 1 0.125 0.375 0.875 6 1 0.375 0.875 0.125 7 1 0.875 0.125 0.375 8 2 0.75 0.75 0.25 9 2 0.0 0.5 0.5 10 2 0.25 0.75 0.75 11 3 0.625 0.875 0.375 12 3 0.875 0.375 0.625 13 3 0.375 0.625 0.875 14 4 0.3702 0.1298 0.6298 15 4 0.6202 0.1202 0.8798 16 4 0.6298 0.3702 0.1298 17 1 0.125 0.875 0.375 18 1 0.875 0.375 0.125 19 1 0.375 0.125 0.875 20 2 0.75 0.25 0.75 21 2 0.5 0.0 0.5 22 3 0.625 0.375 0.875 23 3 0.375 0.875 0.625 24 3 0.875 0.625 0.375 25 4 0.3702 0.6298 0.1298 26 4 0.1202 0.6202 0.8798 27 4 0.1298 0.3702 0.6298 28 1 0.375 0.375 0.625 29 1 0.375 0.625 0.375 30 1 0.125 0.625 0.125 31 1 0.875 0.625 0.875 32 1 0.125 0.125 0.625 33 1 0.625 0.375 0.375 34 1 0.625 0.125 0.125 35 1 0.625 0.875 0.875 36 1 0.875 0.875 0.625 37 2 0.25 0.25 0.25 38 2 0.5 0.5 0.0 39 3 0.875 0.875 0.125 40 3 0.875 0.125 0.875 41 3 0.625 0.125 0.625 42 3 0.375 0.125 0.375 43 3 0.625 0.625 0.125 44 3 0.125 0.875 0.875 45 3 0.125 0.625 0.625 46 3 0.125 0.375 0.375 47 3 0.375 0.375 0.125 48 4 0.6202 0.6202 0.3798 49 4 0.1298 0.8702 0.1298 50 4 0.8798 0.3798 0.8798 51 4 0.6298 0.8702 0.6298 52 4 0.8798 0.8798 0.3798 53 4 0.8702 0.1298 0.1298 54 4 0.3798 0.8798 0.8798 55 4 0.8702 0.6298 0.6298 56 4 0.1202 0.1202 0.3798 57 4 0.3798 0.6202 0.6202 58 4 0.6202 0.3798 0.6202 59 4 0.1298 0.6298 0.3702 60 4 0.8702 0.3702 0.3702 61 4 0.1202 0.3798 0.1202 62 4 0.8798 0.6202 0.1202 63 4 0.3702 0.3702 0.8702 64 4 0.6298 0.6298 0.8702 65 4 0.6202 0.8798 0.1202 66 4 0.3798 0.1202 0.1202 67 4 0.3702 0.8702 0.3702 68 4 0.6298 0.1298 0.3702 69 4 0.8702 0.8702 0.8702 70 4 0.1298 0.1298 0.8702 71 4 0.8798 0.1202 0.6202 72 4 0.1202 0.8798 0.6202 X-ray density (g/cm cub.) = 5.55 MU (1/cm) = 275.588 Mass attenuation coefficient (cm**2/g) = 49.695 Selected interatomic distances (cation-anion,anion-anion): NoP Atom Rad.sph. C.N. Distance NoP N. (angs.) (angs.) 1 Fe ,Ni 2.592 6 2.0475 4 2.0475 4 2.0475 4 2.0475 4 2.0475 4 2.0475 4 2 Fe ,Fe 2.592 4 1.8766 4 1.8766 4 1.8766 4 1.8766 4 3 Ni ,Ni 2.52 6 2.1276 4 2.1276 4 2.1276 4 2.1276 4 2.1276 4 2.1276 4 4 O 3.264 12 2.9523 4 2.9523 4 2.9523 4 2.9523 4 2.8379 4 3.0645 4 2.8379 4 2.8379 4 2.9523 4 3.0645 4 3.0645 4 2.9523 4 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 1 1 10.696 21.392 0.104 55.16 8 65.7 563.8 2 2 2 0 17.643 35.286 0.169 19.04 12 151.1 1540.9 3 1 1 3 20.818 41.635 0.199 13.2 24 247.8 5752.7 4 2 2 2 21.79 43.579 0.207 11.92 8 203.6 1168.1 5 4 0 0 25.38 50.76 0.24 8.44 6 383.4 2199.1 6 3 3 1 27.845 55.69 0.261 6.83 24 32.7 51.7 7 4 2 0 28.634 57.268 0.268 6.41 24 0.0 0.0 8 2 2 4 31.665 63.33 0.293 5.12 24 120.2 525.4 9 1 1 5 33.835 67.669 0.311 4.44 24 218.6 1506.3 10 3 3 3 33.835 67.669 0.311 4.44 8 188.3 372.7 11 4 4 0 37.313 74.625 0.339 3.66 12 525.0 3580.8 12 5 3 1 39.341 78.683 0.354 3.34 48 42.2 84.5 13 4 4 2 40.011 80.022 0.359 3.25 24 1.6 0.1 14 6 2 0 42.665 85.33 0.379 2.98 24 101.5 217.8 15 3 3 5 44.641 89.283 0.393 2.85 24 174.7 616.4 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 1 1 10.696 21.392 4.81932 563.8 9.8 10.0 5.6 2 2 2 0 17.643 35.286 2.95122 1540.9 26.8 27.0 5.7 3 1 1 3 20.818 41.635 2.51681 5752.7 100.0 100.0 5.7 4 2 2 2 21.79 43.579 2.40966 1168.1 20.3 20.3 5.7 5 4 0 0 25.38 50.76 2.08682 2199.1 38.2 37.8 5.8 6 2 2 4 31.665 63.33 1.70389 525.4 9.1 8.9 5.9 7 1 1 5 33.835 67.669 1.60644 1879.1 32.7 31.5 5.9 8 4 4 0 37.313 74.625 1.47561 3580.8 62.2 59.3 6.0 9 5 3 1 39.341 78.683 1.41095 84.5 1.5 1.4 6.0 10 6 2 0 42.665 85.33 1.31982 217.8 3.8 3.5 6.1 11 3 3 5 44.641 89.283 1.27295 616.4 10.7 9.9 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) |