General Information:
Chemical Formula:Ca5(PO4,CO3)3(OH)
Composition:(Molecular Weight = 484.83 gm)Calcium 41.33 %
CaPhosphorus 15.97 %
P Hydrogen 0.21 %
H Carbon 1.24 %
C Oxygen 41.25 %
O Empirical Formula: Ca5(PO4)2.5(CO3)0.5(OH)
Environment:Sedimentary and skarn rocks. Common as bones and teeth in mammals.
Locality:Magnet Cove, Arkansas, USA.
Name Origin:Named as the carbonate and hydroxyl end-member and from the Greek apatao - "I am misleading."
Physical Properties: Color:colorless or white.
Diaphaniety:Transparent
Habits:Earthy - Dull, clay-like texture with no visible crystalline affinities, (e.g. howlite)., Pulverulent - Forms a loose, poorly-coherent powdery mass., Nodular - Tuberose forms having i rregular protuberances over the surface.
Hardness:5 - Apatite
Luminescence:Phosphorescent fluorescent.
Luster:Vitreous - Resinous
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