Fluorapatite
Chemical Formula	Ca5(PO4)3F
Species	Phosphates
Crystal System	Hexagonal
Mohs Scale	5
Specific Gravity	3.1-3.2
Color	Sea-green, Purple, purple, blue, pink, yellow, brown, white, colorless, may be zoned
Streak	White
Luster	Vitreous, Sub-Vitreous, Resinous, Waxy, Greasy
Refractive Index	n = 1.631 - 1.650 n = 1.627 - 1.646
Diaphaneity	Transparent, Opaque
Cleavage	Poor/IndistinctIndistinct and
Fracture	Irregular/Uneven, Conchoidal
Crystal Habit：Massive to prismatic cyrstaliine
Geological Setting：Most common rock forming phosphate. Accessory mineral in most igneous rocks with important concentrations in carbonatites. Common in marbles and skarns. Major mineral in sedimentary phosphorites.