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apatite

A hexagonal mineral, Ca5(PO4)3F ; apatite group; variably colored; commonly fluorescent or phosphorescent; defines 5 on the Mohs hardness scale; a common accessory mineral in igneous and metamorphic rocks, pegmatites, veins, and carbonate rocks; an ore of phosphate in phosphorites.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
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