General Information:
Chemical Formula:
(Ca,Sr,Ce,Na)5(PO4)3F
Composition:
(Molecular Weight = 671.38 gm)
Sodium 0.86 % Na
Strontium 19.58 % Sr
Calcium 13.43 % Ca
Cerium 20.87 % Ce
Phosphorus 13.84 % P
Oxygen 28.60 % O
Fluorine 2.83 % F
Empirical Formula:
5(Ca0.45)5(Sr0.3)5(Ce0.2)5(Na0.05)(PO4)3F
Environment:
In miarolitic cavities in a hyperagpaitic pegmatite in ijolite-urtite. Ca and F dominant analog of strontium-apatite.
IMA Status:
Approved IMA (Dana # Added)
Locality:
Khibina alkaline massif, Kola Peninsula, Russia.
Name Origin:
Named after its composition of fluorine, calcium, and phosphorous.
Physical Properties:
Cleavage:
None
Color:
light yellow or bright yellow.
Density:
3.6
Diaphaniety:
Transparent
Habits:
Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).,
Hardness:
5 - Apatite
Luminescence:
Non-fluorescent.
Luster:
Vitreous (Glassy)
Streak:
white
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