#amphibole  a mineral or mineral variety belonging to the amphibole group
  supertype:  #mineral  solid homogeneous inorganic substances occurring in nature having a definite chemical composition
  subtype:  #nephrite  #actinolite  #anthophyllite  #asbestos  #hornblende
  substance of:  #amphibolite
  member of:  #amphibole_group  a group of minerals with similar crystal structures containing a silicate chain and combinations of chiefly sodium and calcium and magnesium and iron and aluminum

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