diaplectic

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diaplectic (not comparable)

  1. (mineralogy) Formed into a glassy state by shock transformation without melting.
    • 1992, “Terrestrial Impact Craters Glossary”, in (Please provide the book title or journal name)[1]:
      diaplectic glass — A natural glass formed by shock transformation from any of several minerals without melting. It is found only in association with meteorite impact craters and crater ejecta.