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crystalloclast ‎(plural crystalloclasts)

  1. (rare) A person who breaks crystals for the purpose of studying them.
  2. (mineralogy) A clast that consists primarily of crystalized mineral.
    • 2002, Geochemistry international: Volume 40, Pages 827-1242
      Virtually all crystalloclasts are strongly fractured, fused, and fragmented, and are often partly dissolved in the ground-mass...