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American Mineralogist, Volume 93, pages 1148–1152, 2008 0003-004X/08/0007–1148$05.00/DOI: 10.2138/am.2008.2701 1148 Single-crystal X-ray diffraction study of CaIrO3 Masahiko sugahara,1,* akira Yoshiasa,1 akira Yoneda,2 TakafuMi hashiMoTo,1 sYunsuke sakai,1 Maki okube,3 akihiko nakaTsuka,5 and osaMu ohTaka4 1Graduate School of Science, Kumamoto University, Kumamoto 860-8555, Japan 2 Institute for Study of the Earth’s Interior, Okayama University, Misasa 682-0193, Japan 3Tokyo Institute of Technology, Nagatsuta 4259, Yokohama 226-8502, Japan 4Department of

American Mineralogist, Volume 93, pages 1043–1050, 2008 0003-004X/08/0007–1043$05.00/DOI: 10.2138/am.2008.2742 1043 Pressure-temperature studies of talc plus water using X-ray diffraction A.E. GlEAson,1,* s.A. PArry,2 A.r. PAwlEy,2 r. JEAnloz,1 And s.M. ClArk1,2,3 1Department of Earth and Planetary Science, University of California, Berkeley, McCone Hall 4767, Berkeley, Calfornia 94720, U.S.A. 2School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K. 3Advanced Light Source, Lawrence Berkeley

radial distribution functions obtained from X-ray diffraction data are similar. The first peak of the radial distribution function, mainly due to metal-metal nearest neighbours, has been simulated by a peak shape function. In all the investigated samples the best fit was obtained using two slightly different metal-metal distances, which suggests the presence of an asymmetric distribution. Key words: Amorphous Alloys X-ray Diffraction Powders. 1. Introduction Amorphous TM -B (TM = Transition Metal) alloys for structural investigations have mostly been pre­ pared by

On the Cross-Section Structure of the Mitochondrial Cristae-Membrane as Revealed by X-Ray Diffraction W. Müller-Klieser and W. Kreutz Institut für Biophysik und Strahlenbiologie der Universität Freiburg (Z. Naturforsch. 31c, 612 — 621 [1976]; received July 16, 1976) Biomembranes, Mitochondria, X-Ray Diffraction, (^-Function, Electron Density Profile Mitochondria were isolated using sorbitol and high buffer concentration in the medium. X-ray diffraction patterns arising from the mitochondrial cristae-membrane were recorded in the fully dried state and in two

Padova, Via Marzolo 8, 1-35131 Padova, Italy Z. Naturforsch. 49 a, 9 7 7 -9 8 2 (1994); received July 25, 1994 Two vitreous samples, 0.9 Z n (P 0 3)2 • 0.1 E u (P 0 3)3 and pure zinc metaphosphate, were examined by X-ray diffraction to determine the local environment of the Eu3+ ion. Using a difference proce­ dure involving the radial functions of the two glasses, the results indicate that the rare-earth ion is surrounded on average by a polyhedron of about 7.4 oxygens at 2.36 A and about 1.6 oxygens at 2.68 Ä. A possible different coordination of the zinc ion in

Neutron and X-ray Diffraction Study on the Structure of Ultraphosphate Glasses Uwe H o p p e 1 , Gün te r Wal te r 1 , Dör t e S tache l 2 , Andrea Barz 2 , and Alex C. H a n n o n 3 1 Rostock University, Dept. Physics, D-18051 Rostock 2 Friedrich Schiller University Jena, Otto Schott Institute, D-07743 Jena 3 Rutherford Appleton Lab., ISIS Facility, Chilton, Didcot OX11 OQX, UK Z. Naturforsch. 52a, 259-269 (1997); received July 6, 1996 The high real-space resolution of neutron diffraction experiments which is provided by use of the epithermal neutrons

American Mineralogist, Volume 98, pages 671–679, 2013 0003-004X/13/0004–671$05.00/DOI: 671 A time-resolved X-ray diffraction study of Cs exchange into hexagonal H-birnessite Claire r. Fleeger,1,* Peter J. Heaney,1 and JeFFrey e. Post2 1Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, U.S.A. 2Department of Mineral Science, Smithsonian Institution, Washington, D.C. 20560, U.S.A. abstraCt To measure the uptake of radioactive Cs in soils that are rich in Mn oxides, we applied

American Mineralogist, Volume 97, pages 291–298, 2012 0003-004X/12/0203–291$05.00/DOI: 291 Combined neutron and X-ray diffraction determination of disorder in doped zirconolite-2M Karl r. Whittle,1,2,* Neil C. hyatt,2 KatheriNe l. Smith,1 ireNe margiolaKi,3 FraNK J. Berry,4,† KeviN S. KNight,5 aNd gregory r. lumpKiN1 1Institute of Materials and Engineering Science, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia 2Department of Materials Science

American Mineralogist, Volume 93, pages 667–675, 2008 0003-004X/08/0004–667$05.00/DOI: 10.2138/am.2008.2590 667 Synchrotron powder X-ray diffraction study of the structure and dehydration behavior of palygorskite Jeffrey e. Post1,* and Peter J. Heaney2 1Department of Mineral Sciences, Smithsonian Institution, Washington, D.C. 20560-0119, U.S.A. 2Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802, U.S.A. abstract Rietveld refinements using synchrotron powder X-ray diffraction data were used to study the crystal

methods used for determination of CrI from XRD. Wide angle X-ray diffraction (WAXD) has long been used to determine the fractional crystallinity of cellulose fibres within the two-phase model ( Garvey et al. 2005 ). Based on a literature survey of about 80 journal articles, the most widely used and simplest method for determining the CrI for commercially available celluloses is the XRD peak height method, which involves the measurement of just two heights in the X-ray diffractogram, and produces significantly higher crystallinity values than the other methods ( Garvey