General Information:
Chemical Formula:
Ca5(PO4)3F
Composition:
(Molecular Weight = 504.30 gm)
Calcium 39.74 % Ca
Phosphorus 18.43 % P
Oxygen 38.07 % O
Fluorine 3.77 % F
Empirical Formula:
Ca5(PO4)3F
Locality:
Common world wide.
Name Origin:
Named as the fluorine end-member and from the Greek apatao - "I am misleading."
Physical Properties:
Cleavage:
[0001] Indistinct
Color:
blue, brown, colorless, violet, or green.
Density:
3.1 - 3.2, Average = 3.15
Diaphaniety:
Transparent to Opaque
Habits:
Massive - Granular - Common texture observed in granite and other igneous rock., Euhedral Crystals - Occurs as well-formed crystals showing good external form.,
Hardness:
5 - Apatite
Luminescence:
Fluorescent and phosphorescent.
Luster:
Vitreous - Resinous
Streak:
white
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