Volume 22 Issue 4
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WANG Shi-Xia, ZHENG Hai-Fei. The Research on Dissolvability and Phase Transition of Gypsum at High Pressure and Ambient Temperature[J]. Chinese Journal of High Pressure Physics, 2008, 22(4): 429-433 . doi: 10.11858/gywlxb.2008.04.016
Citation: WANG Shi-Xia, ZHENG Hai-Fei. The Research on Dissolvability and Phase Transition of Gypsum at High Pressure and Ambient Temperature[J]. Chinese Journal of High Pressure Physics, 2008, 22(4): 429-433 . doi: 10.11858/gywlxb.2008.04.016

The Research on Dissolvability and Phase Transition of Gypsum at High Pressure and Ambient Temperature

doi: 10.11858/gywlxb.2008.04.016
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  • Corresponding author: ZHENG Hai-Fei
  • Received Date: 10 Oct 2007
  • Rev Recd Date: 05 Jan 2008
  • Issue Publish Date: 05 Dec 2008
  • The Raman spectra of gypsum during the pressure of 200~1 100 MPa is studied at ambient temperature, and the dissolvability and phase transition of gypsum are observed. It shows that gypsum is stable at the pressure less than 407 MPa; and then gypsum begins to dissolve with the increasing pressure. Gypsum stops dissolving and phase transition happens (gypsum-bassanite) to some degree. After phase transition, bassanite disappears with the rising pressure. It applies that geological disasters will happen because of dissolvability and phase transition of minerals in the inner of earth.

     

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