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    • Physics and chemistry of minerals Journal

    Papers
    Thermal Expansion of Periclase (mgo) and Tungsten (W) to Melting Temperatures
    L. S. Dubrovinsky,S. K. Saxena
    Physics and Chemistry of Minerals（1997）SCI 4区SCI 3区
    In situ x-ray data on molar volumes of periclase and tungsten have been collected over the temperature range from 300 K to melting. We determine the temperature by combining the technique of spectroradiometry and electrical resistance wire heating. The thermal expansion (α) of pe...
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    Compression and Amorphization of (mg,fe) 2 SiO 4 Olivines: an X-ray Diffraction Study Up to 70 GPa
    D. Andrault,M. A. Bouhifd,J. P. Itié,P. Richet
    Physics and Chemistry of Minerals（1995）SCI 4区SCI 3区
    The effect of (Mg,Fe) substitution on the compression and pressure-induced amorphization of olivines has been investigated up to more than 50 GPa in a diamond anvil cell through energy-dispersive X-ray diffraction experiments with synchrotron radiation. For the four (Mg1−x, Fe x ...
    Cited66Views4
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    Optimization of CNDO for Molecular Orbital Calculation on Silicates
    Antonio C. Lasaga
    Physics and Chemistry of Minerals（1982）SCI 4区SCI 3区
    The use of approximate molecular orbital (MO) calculations [particularly complete neglect of differential overlap (CNDO)] as a tool in understanding chemical bonding in silicates is investigated. This requires first a detailed analysis of the parametrization employed by the CNDO ...
    Cited49Views9
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    Be, Fe2+-substitution in Natural Beryl: an Optical Absorption Spectroscopy Study
    Michail N. Taran,Oleksii A. Vyshnevskyi
    Physics and Chemistry of Minerals（2019）SCI 4区SCI 3区
    Collection of variously colored gem quality iron-bearing beryl from two Brazilian deposits, Lavra do Abilio (Minas Gerais) and Garimpo do Cercadinho (Bahia) was studied by polarized optical absorption microspectroscopy and microprobe analysis. The main attention was paid to spati...
    Cited12Views2
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    Phase Diagrams, Thermodynamic Properties and Sound Velocities Derived from a Multiple Einstein Method Using Vibrational Densities of States: an Application to MgO–SiO2
    Michael H. G. Jacobs,Rainer Schmid-Fetzer,Arie P. van den Berg
    Physics and Chemistry of Minerals（2016）SCI 4区SCI 3区
    In a previous paper, we showed a technique that simplifies Kieffer’s lattice vibrational method by representing the vibrational density of states with multiple Einstein frequencies. Here, we show that this technique can be applied to construct a thermodynamic database that accura...
    Cited18Views7
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    Dislocations in Perovskites BaTiO 3 and CaTiO 3
    N. Doukhan,J. C. Doukhan
    Physics and Chemistry of Minerals（1986）SCI 4区SCI 3区
    Dislocations either grown-in or produced by plastic deformation have been studied in transmission electron microscopy (TEM) in two crystals with the perovskite structure, namely BaTiO3 (P4mm at room temperature) and CaTiO3 (Pcmn). Two distinct deformation processes have been used...
    Cited40Views10
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    A Raman Spectroscopic Study of H/D Isotopically Substituted Hydrous Aluminosilicate Glasses
    Paul F. McMillan,Brent T. Poe,Thomas R. Stanton,Richard L. Remmele
    Physics and Chemistry of Minerals（1993）SCI 4区SCI 3区
    We have obtained high quality Raman spectra for two H/D isotopically substituted hydrous aluminosilicate glasses with compositions along the NaAlSi3O8-SiO2 join. Consistent with the results of previous studies, the isotope shift for the band near 900 cm−1, whose intensity grows w...
    Cited39Views2
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    Interaction of Cations on Octahedral and Tetrahedral Sites in Simple Spinels
    Alexandra Navrotsky
    Physics and Chemistry of Minerals（1984）SCI 4区SCI 3区
    The cation distribution in the partly inversed binary spinel is usually treated in terms of octahedral site preference energies. Such a model is based on the assumption of ideal cation mixing in each position. The present version of theory includes explicitly the interaction betw...
    Cited75Views1
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    Infrared Absorption and Reflection Spectroscopy on the Natural Zeolite Harmotome
    E. Stuckenschmidt,H. Fuess,F. Pechar
    Physics and Chemistry of Minerals（1988）SCI 4区SCI 3区
    Infrared absorption spectra (400–4000 cm−1) were measured on dehydrated and partially dehydrated powder of the zeolite harmotome Ba2[(AlO2)4(SiO2)12]·12H2O. Whereas the disappearance of the bending mode at ∼1640 cm−1 proved the absence of water molecules after dehydration, the O-...
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    Thermal Expansion along the NaAlSi2O6–NaFe3+Si2O6 and NaAlSi2O6–CaFe2+Si2O6 Solid Solutions
    Mario Tribaudino,Fabrizio Nestola,Marco Bruno,Tiziana Boffa Ballaran,Christian Liebske
    Physics and Chemistry of Minerals（2008）SCI 4区SCI 3区
    The high temperature volume and axial parameters for six C2/c clinopyroxenes along the NaAlSi2O6–NaFe3+Si2O6 and NaAlSi2O6–CaFe2+Si2O6 joins were determined from room T up to 800°C, using integrated diffraction profiles from in situ high temperature single crystal data collection...
    Cited27Views2
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    31P solid-state nuclear magnetic resonance spectroscopy of aluminum phosphate minerals
    William F. Bleam,Philip E. Pfeffer,James S. Frye
    Physics and Chemistry of Minerals（1989）SCI 4区SCI 3区
    This study examines the links between 31P solidstate NMR studies of aluminum phosphate minerals and their crystallographic structures. We found that 31P isotropic chemical shift values, diso, carry little information about mineral structures. There seems to be no relation between...
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    Melting of Carbon at 50 to 300 Kbar
    Maura S. Weathers,William A. Bassett
    Physics and Chemistry of Minerals（1987）SCI 4区SCI 3区
    Diamond (∼1 μm) and graphite (1–10 μm) in NaCl were melted at 50 to 300 kbar in a diamond anvil cell using a pulsed YAG laser. The samples were removed from the cell and the structures of the quenched phases were studied by transmission electron microscopy.
    Cited52Views2
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    The Disproportionation of Andalusite (al 2 SiO 5 ) to Al 2 O 3 and SiO 2 under Shock Compression
    H. Schneider, U. Hornemann
    Physics and Chemistry of Minerals（1977）SCI 4区SCI 3区
    Shock-recovery experiments have been carried out on andalusite single crystals of gem quality in a pressure range from 300 up to 575 kbar. Infrared spectroscopic investigations indicate a progressive shock-induced transformation of andalusite into short-range-ordered Al2O3 and Si...
    Cited17Views1
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    Structure and Modeling of Disorder in Miserite from the Murun (russia) and Dara-i-Pioz (tajikistan) Massifs
    Ekaterina Kaneva,Maria Lacalamita,Ernesto Mesto,Emanuela Schingaro,Fernando Scordari,Nikolay Vladykin
    Physics and Chemistry of Minerals（2013）SCI 4区SCI 3区
    The structure, structural disorder and chemistry of miserite from the charoite-bearing rocks of the Murun massif (Russia) and from alkaline-syenite pegmatitic rocks of the Dara-i-Pioz massif (Tajikistan) were investigated employing a combination of electron microprobe, single cry...
    Cited11Views11
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    29 Si MAS NMR Relaxation Study of Shocked Coconino Sandstone from Meteor Crater, Arizona
    S. A. Myers,R. T. Cygan,R. A. Assink,M. B. Boslough
    Physics and Chemistry of Minerals（1998）SCI 4区SCI 3区
    29 Si nuclear magnetic resonance (NMR) spectroscopy was used to characterize the silica phases in a moderately-shocked Coconino sandstone from Meteor Crater, Arizona. The spectra were recorded using direct polarization, magic-angle spinning, and variable delay times in a saturati...
    Cited18Views20
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    Determination of the Hydrogen Content of Synthetic Quartz by Neutron Polarization Analysis
    O. Moze,T. J. Hicks, A. C. McLaren
    Physics and Chemistry of Minerals（1980）SCI 4区SCI 3区
    Neutron polarization analysis has been used for the quantitative determination of hydrogen in a crystal of synthetic quartz. The observed weighted average value of 1860±950 H/106Si is in good agreement with the value determined from infrared absorption.
    Cited7Views1
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    Equation of State of Adamite Up to 11 Gpa: A Synchrotron X-Ray Diffraction Study
    Jingui Xu,Maining Ma,Shuyi Wei,Xianxu Hu,Yonggang Liu,Jing Liu,Dawei Fan,Hongsen Xie
    Physics and Chemistry of Minerals（2014）SCI 4区SCI 3区
    The compression behavior of natural adamite [Zn2AsO4OH] has been investigated up to 11.07 GPa at room temperature utilizing in situ angle-dispersive X-ray diffraction and a diamond anvil cell. No phase transition has been observed within the pressure range investigated. A third-o...
    Cited6Views8
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    Full Multiple Scattering Calculations at Al K-edge on Alumino-Silicates and Al-oxides
    D. Cabaret,Ph. Sainctavit,Ph. Ildefonse, G. Calas,A.- M. Flank
    Physics and Chemistry of Minerals（1996）SCI 4区SCI 3区
    We present full multiple-scattering calculations at the aluminium K edge that we compare with experiments for four crystalline silicates and oxide minerals. In the different minerals aluminium atoms are either fourfold or sixfold coordinated to oxygen atoms in Al sites that are p...
    Cited7Views3
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    Polarization Effects in the Infrared Spectra of ?-Quartz and ?-Cristobalite
    M. Ocaña,V. Fornes,J. V. Garcia-Ramos,C. J. Serna
    Physics and Chemistry of Minerals（1987）SCI 4区SCI 3区
    The effect of anisotropy and particle shape has been analysed in the infrared powder spectra of α-quartz and α-cristobalite by using theTheory of theAverage Dielectric Constant. Information is obtained regarding the applicability of the theory to these compounds of low polarizabi...
    Cited62Views2
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    Natrolite .2. Determination Of Deformation Electron-Densities By The X-X Method
    E Stuckenschmidt,W Joswig,Wh Baur
    Physics and Chemistry of Minerals（1994）SCI 4区SCI 3区
    A single crystal of natrolite, Na2Al2Si3O10.2H(2)O (space group Fdd2), was studied by X-ray diffraction methods at room temperature. The intensities were measured in a complete sphere of reflection up to sin Theta/ lambda 1=0.903 Angstrom(-1). A refinement of high-order diffracti...
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