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.
Scopus subject areas
- Materials Science(all)
- Geochemistry and Petrology
Gorelova, L. A., Pakhomova, A. S., Krivovichev, S. V., Kasatkin, A. V., & Dubrovinsky, L. S. (2020). Compressibility of hingganite‑(Y): high‑pressure single crystal X‑ray diffraction study. Physics and Chemistry of Minerals, 47(5), . https://doi.org/10.1007/s00269-020-01090-x