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Apatite
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Physical Properties
Ca5(PO4)3
Hardness = 4;
Crystals hexagonal short to long
     prismatic; often massive
Green, brown, yellow, red, etc.
Cleavage: one poor across prism
Luster: greasy, vitreous (glassy),
     transparent to transluscent
Description
     These short, stubby, hexagonal greenish-brown crystals are typical. The hexagonal cross section is clear, but not as distinct as in other crystals such as the quartz to the right where the faces are flat and the corners sharp. The bottom center apatite crystal is a cross section through the prism.
  

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Last Update: 10/01/00

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