Dehydration of a gypsum mineral induced by shock compression: a micro-Raman analysis

• L. Bucio ^[1] ; I. Rosales ^[1] ; C. Thions ^[1] ; J. Soullard ^[1] ; E. Orozco ^[1]
  1. [1] Universidad Nacional Autónoma de México

     Universidad Nacional Autónoma de México

     México

     
• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 62, Nº. 5, 2016, págs. 470-474
• Idioma: inglés
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• Resumen

  • In this article we report the phase transitions induced by shock-compression on a sample of gypsum mineral. The shock experiment was performed in a light gas gun until a pressure close to 14 GPa. The experimental technique employed to analyze the shock effects on the “recovered sample” was the Micro-Raman Spectroscopy (MRS). The results indicate the partial dehydration of gypsum as a result of impact. The MRS analysis also suggests the presence of micro-mixtures of gypsum, bassanite and anhydrite heterogeneously distributed throughout the “recovered sample”.