Abstract
OH stretching vibration modes for F-rich natural topaz (F-topaz) and for fully hydrated topaz (topaz-OH) synthesized at high pressure, were observed using IR and Raman spectroscopies at pressures up to 30.4 GPa and 17.3 GPa, respectively. In F-topaz, the pressure derivative of the frequency of the OH stretching band observed at 3650 cm-1 at ambient pressure was 0.91(3) cm-1/GPa, which was consistent with the value recently reported by Bradbury and Williams (2003). On the other hand, in topaz-OH, the pressure derivatives of the bands initially at 3599 and 3522 cm-1 were -5.2(2) and -2.56(6) cm-1/GPa, respectively. This contrasting behavior between the two forms of topaz at high pressures suggests that the OH substitution for F in topaz affects the hydrogen-bonding behavior under high pressure.
© 2015 by Walter de Gruyter Berlin/Boston
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Articles in the same Issue
- Contact metamorphism of the White Mountain Peak metavolcanic complex, eastern California
- Structure and luminescence characteristics of quartz from pegmatites
- Evidence for monazite-, barite-, and AgMnO4 (distorted barite)-type structures of CaSO4 at high pressure and temperature
- The “template” effect of the extra-framework content on zeolite compression: The case of yugawaralite
- The influence of OH in coesite on the kinetics of the coesite-quartz phase transition
- First-principles study of hydrogen bond symmetrization of phase D under high pressure
- First-principles study of OH-stretching modes in kaolinite, dickite, and nacrite
- A systematic study of OH in hydrous wadsleyite from polarized FTIR spectroscopy and single-crystal X-ray diffraction: Oxygen sites for hydrogen storage in Earthʼs interior
- Determination of the content and distribution of fixed ammonium in illite-smectite using a modified X-ray diffraction technique: Application to oil source rocks of western Greenland
- Determination of defect structures in kaolin minerals by high-resolution transmission electron microscopy (HRTEM)
- Mössbauer spectroscopy of omphacite and garnet pairs from eclogites: Application to geothermobarometry
- Allanite and epidote weathering at the Coweeta Hydrologic Laboratory, western North Carolina, U.S.A.
- Ca2SiO3OHFA high-pressure phase with dense calcium polyhedral packing and tetrahedral silicon
- Relationships between SEM-cathodoluminescence response and trace-element composition of hydrothermal vein quartz
- Quantitative evaluation of attenuation contrast of X-ray computed tomography images using monochromatized beams
- Biotic and abiotic products of Mn(II) oxidation by spores of the marine Bacillus sp. strain SG-1
- The Mn, Mg-intracrystalline exchange reaction in donpeacorite (Mn0.54Ca0.03Mg1.43Si2O6) and its relation to the fractionation behavior of Mn in Fe, Mg-orthopyroxene
- Crystal structures of chalcostibite (CuSbS2) and emplectite (CuBiS2): Structural relationship of stereochemical activity between chalcostibite and emplectite
- Hydration and swelling of synthetic Na-saponites: Influence of layer charge
- Dehydroxylation and CO2 incorporation in annealed mica (sericite): An infrared spectroscopic study
- Relict coesite exsolution in omphacite from Western Tianshan eclogites, China
- Hyperfine electric field gradients and local distortion environments of octahedrally coordinated Fe2+
- A synchrotron Mössbauer spectroscopy study of (Mg,Fe)SiO3 perovskite up to 120 GPa
- Temporal stability and pressure calibration of barium carbonate and talc/pyrex pressure media in a piston-cylinder apparatus
- Cation ordering in magnesioferrite, MgFe2O4, to 982 °C using in situ synchrotron X-ray powder diffraction
- Halite-sylvite thermoconsolution
- The role of water in the structures of synthetic hallimondite, Pb2[(UO2)(AsO4)2](H2O)n and synthetic parsonsite, Pb2[(UO2)(PO4)2](H2O)n, 0 ≤ n ≤ 0.5
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- Letter. The effect of zinc sulfide on phase transformations of ferrihydrite
- Letter. Stability and equation of state of MgGeO3 post-perovskite phase
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