A Study of Bulk Modulus of Beryl Using Water as a Pressure-Transmitting Medium

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In-situ high-pressure and ex-situ high temperature-pressure experiments of natural beryl (Be3Al2Si6O18, P6/mcc) from two different localities (beryl-A and beryl-B) were studied using pure water as pressure transmitting medium. Compared to the previous study using a mixture of methanol:ethanol medium in 4 : 1 by volume, pressure- and temperature-induced chemical and structural changes under water medium are expected to be different. The derived bulk moduli are 111(7) GPa, K0’ = 73(7); 110(9) GPa, K0’ = 65(8) for beryl-A and beryl-B, respectively. We observe densifications in volume compression, which appear to be attributed to the phase transitions of water to ICE VI and ICE VII around 1.0 GPa and 2.5 GPa, respectively.
Original languageEnglish
Pages (from-to)83-91
Number of pages9
Issue number3
Publication statusPublished - 2017 Sep


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