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1 results

  • Hydrolytic weakening of jadeite in UHP jadeite-quartzites from the Dabie Mountains, eastern China

  • Wen Su, Kai Ye, Jingbo Liu
  • Journal:
    Mineralogical Magazine / Volume 70 / Issue 5 / October 2006
    Published online by Cambridge University Press:
    05 July 2018, pp. 509-515

  • Deformed jadeite grains in the UHP jadeite-quartzites from the Dabie Mountains, eastern China show evidence (by transmission electron microscopy, TEM) of plastic deformation: free dislocations, dislocation loops, dislocation networks, dislocation arrays and regularly spaced subgrain boundaries by dislocation walls. Electron energy-loss spectroscopy and TEM studies reveal the existence of water-rich bubbles within dislocations and imply a relationship with water-defect dislocation by water weakening in the jadeites. These observations suggest that the water-rich bubbles are a major weakening effect facilitating plastic deformation of jadeite by dislocation creep.