Compressibility of hingganite‑(Y): high‑pressure single crystal X‑ray diffraction study

Liudmila A. Gorelova, Anna S. Pakhomova, Sergey V. Krivovichev, Anatoly V. Kasatkin, Leonid S. Dubrovinsky

Research output

1 Citation (Scopus)

Abstract

Behaviour of hingganite-(Y), Y2□Be2Si2O8(OH)2, on compression to 47 GPa has been studied by synchrotron-based in situ high-pressure single-crystal X-ray diffraction at room temperature in a diamond anvil cell. In the studied pressure range no obvious phase transitions have been observed. The compression of hingganite-(Y) crystal structure is anisotropic, with b axis showing the maximal compressibility. A fit of the experimental pressure–volume data by the Birch-Murnaghan third-order equation of state yielded the bulk modulus of 131(2) GPa and its pressure first derivative of 3.5(2). The difference between high-pressure behaviour of hingganite-(Y) and structurally related datolite is governed by the different chemical nature of interlayer cations.
Original languageEnglish
Article number22
Number of pages12
JournalPhysics and Chemistry of Minerals
Volume47
Issue number5
DOIs
Publication statusPublished - 1 May 2020

Scopus subject areas

  • Materials Science(all)
  • Geochemistry and Petrology

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