#apatite  a common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate; a source of phosphorus
  supertype:  #mineral  solid homogeneous inorganic substances occurring in nature having a definite chemical composition
  substance:  #phosphorus  #terbium  #thulium
  subtype:  #fluorapatite  a form of apatite in which fluorine predominates over chlorine

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