Home Physical Sciences Single-crystal structure refinement of diaspore at 50 GPa
Article
Licensed
Unlicensed Requires Authentication

Single-crystal structure refinement of diaspore at 50 GPa

  • Alexandra Friedrich EMAIL logo , Eiken Haussühl , Reinhard Boehler , Wolfgang Morgenroth , Erick A. Juarez-Arellano and Björn Winkler
Published/Copyright: April 1, 2015
Become an author with De Gruyter Brill
Author Information
American Mineralogist
From the journal American Mineralogist Volume 92 Issue 10

Abstract

The crystal structure of diaspore, AlO(OH), has been investigated by in situ single-crystal synchrotron X-ray diffraction at ~50 GPa using the diamond-anvil cell technique. Diaspore is found to retain its structure up to 51.5 GPa at room temperature, which is more than 30 GPa above the transition pressure to δ-AlO(OH) found in quenched high-temperature experiments and derived from density functional theory calculations. The compression is anisotropic and largest for the a axis. This can be explained by the fact that the structural response to pressure is mainly due to the shortening of the hydrogen bond, which is oriented nearly parallel to the a axis. The hydrogen bond becomes significantly more symmetric with pressure up to 50 GPa.

Keywords: Diaspore; high pressure; crystal structure; synchrotron radiation; single crystal
Received: 2006-12-31
Accepted: 2007-5-24
Published Online: 2015-4-1
Published in Print: 2007-10-1

© 2015 by Walter de Gruyter Berlin/Boston

Articles in the same Issue

  1. Ferric iron in Al-bearing akimotoite coexisting with iron-nickel metal in a shock-melt vein in an L-6 chondrite
  2. Solidification and microstructures of binary ice-I/hydrate eutectic aggregates
  3. A monazite oxygen isotope thermometer
  4. The albite fusion curve re-examined: New experiments and the high-pressure density and compressibility of high albite and NaAlSi3O8 liquid
  5. XRD and HRTEM analyses of stacking structures in sudoite, di-trioctahedral chlorite
  6. Vibrational dynamics in H+-substituted forsterite: A first-principles molecular dynamics study
  7. Fluorophlogopite from Biancavilla (Mt. Etna, Sicily, Italy): Crystal structure and crystal chemistry of a new F-dominant analog of phlogopite
  8. Pressure-induced over-hydration of thomsonite: A synchrotron powder diffraction study
  9. High-pressure optical spectroscopy and X-ray diffraction studies on synthetic cobalt aluminum silicate garnet
  10. In situ observation of the decomposition of kyanite at high pressures and high temperatures
  11. Mineralogy and crystal structure of bouazzerite from Bou Azzer, Anti-Atlas, Morocco: Bi-As-Fe nanoclusters containing Fe3+ in trigonal prismatic coordination
  12. Single-crystal structure refinement of diaspore at 50 GPa
  13. FTIR spectroscopy of Ti-rich pargasites from Lherz and the detection of O2- at the anionic O3 site in amphiboles
  14. The relative stability of monazite and huttonite at 300 - 900 °C and 200 - 1000 MPa: Metasomatism and the propagation of metastable mineral phases
  15. Acoustic dissipation associated with phase transitions in lawsonite, CaAl2Si2O7(OH)2·H2O
  16. Magnetic anisotropy of carbonate minerals at room temperature and 77 K
  17. Non-ideality and defectivity of the åkermanite-gehlenite solid solution: An X-ray diffraction and TEM study
  18. The system Al2O3-P2O5-H2O at temperatures below 200 °C: Experimental data on the stability of variscite and metavariscite AlPO4·2H2O
  19. Low-pressure decomposition of chrysotile as a function of time and temperature
  20. Ion exchange equilibrium and structural changes in clinoptilolite irradiated with β- and γ-radiation: Monovalent cations
  21. Investigation of dioctahedral smectite hydration properties by modeling of X-ray diffraction profiles: Influence of layer charge and charge location
  22. Growth of large (1 mm) MgSiO3 perovskite single crystals: A thermal gradient method at ultrahigh pressure
  23. Carbon is not required during crystallization to produce ferrobasalts/ferrodiorites (FTP rocks)
  24. Letter: Meridianiite: A new mineral species observed on Earth and predicted to exist on Mars
  25. Letter: Equations of state of CaIrO3 perovskite and post-perovskite phases
  26. Letter: Hydrogen-carbonate ion in synthetic high-pressure apatite
  27. Letter: Effects of irradiation damage on the back-scattering of electrons: Silicon-implanted silicon
  28. Letter: High-precision oxygen isotope analysis of picogram samples reveals 2 μm gradients and slow diffusion in zircon
https://doi.org/10.2138/am.2007.2549
Keywords for this article
Diaspore; high pressure; crystal structure; synchrotron radiation; single crystal

Articles in the same Issue

  1. Ferric iron in Al-bearing akimotoite coexisting with iron-nickel metal in a shock-melt vein in an L-6 chondrite
  2. Solidification and microstructures of binary ice-I/hydrate eutectic aggregates
  3. A monazite oxygen isotope thermometer
  4. The albite fusion curve re-examined: New experiments and the high-pressure density and compressibility of high albite and NaAlSi3O8 liquid
  5. XRD and HRTEM analyses of stacking structures in sudoite, di-trioctahedral chlorite
  6. Vibrational dynamics in H+-substituted forsterite: A first-principles molecular dynamics study
  7. Fluorophlogopite from Biancavilla (Mt. Etna, Sicily, Italy): Crystal structure and crystal chemistry of a new F-dominant analog of phlogopite
  8. Pressure-induced over-hydration of thomsonite: A synchrotron powder diffraction study
  9. High-pressure optical spectroscopy and X-ray diffraction studies on synthetic cobalt aluminum silicate garnet
  10. In situ observation of the decomposition of kyanite at high pressures and high temperatures
  11. Mineralogy and crystal structure of bouazzerite from Bou Azzer, Anti-Atlas, Morocco: Bi-As-Fe nanoclusters containing Fe3+ in trigonal prismatic coordination
  12. Single-crystal structure refinement of diaspore at 50 GPa
  13. FTIR spectroscopy of Ti-rich pargasites from Lherz and the detection of O2- at the anionic O3 site in amphiboles
  14. The relative stability of monazite and huttonite at 300 - 900 °C and 200 - 1000 MPa: Metasomatism and the propagation of metastable mineral phases
  15. Acoustic dissipation associated with phase transitions in lawsonite, CaAl2Si2O7(OH)2·H2O
  16. Magnetic anisotropy of carbonate minerals at room temperature and 77 K
  17. Non-ideality and defectivity of the åkermanite-gehlenite solid solution: An X-ray diffraction and TEM study
  18. The system Al2O3-P2O5-H2O at temperatures below 200 °C: Experimental data on the stability of variscite and metavariscite AlPO4·2H2O
  19. Low-pressure decomposition of chrysotile as a function of time and temperature
  20. Ion exchange equilibrium and structural changes in clinoptilolite irradiated with β- and γ-radiation: Monovalent cations
  21. Investigation of dioctahedral smectite hydration properties by modeling of X-ray diffraction profiles: Influence of layer charge and charge location
  22. Growth of large (1 mm) MgSiO3 perovskite single crystals: A thermal gradient method at ultrahigh pressure
  23. Carbon is not required during crystallization to produce ferrobasalts/ferrodiorites (FTP rocks)
  24. Letter: Meridianiite: A new mineral species observed on Earth and predicted to exist on Mars
  25. Letter: Equations of state of CaIrO3 perovskite and post-perovskite phases
  26. Letter: Hydrogen-carbonate ion in synthetic high-pressure apatite
  27. Letter: Effects of irradiation damage on the back-scattering of electrons: Silicon-implanted silicon
  28. Letter: High-precision oxygen isotope analysis of picogram samples reveals 2 μm gradients and slow diffusion in zircon
Sign up now to receive a 20% welcome discount
Institutional Access
How does access work?
Have an idea on how to improve our website?
Please write us.
© 2026 De Gruyter Brill
Downloaded on 26.2.2026 from https://www.degruyterbrill.com/document/doi/10.2138/am.2007.2549/pdf
Scroll to top button