Fluorite
Chemical Formula	CaF2
Species	Halides
Crystal System	Isometric
Mohs Scale	4
Specific Gravity	3.175-3.184
Color	Colorless, white, purple, blue, green, yellow, orange, red, pink, brown, bluish black; commonly zoned
Streak	White
Luster	Vitreous, Dull
Refractive Index	n = 1.433 - 1.448
Diaphaneity	Transparent, Translucent
Cleavage	PerfectPerfect on , very easy.
Fracture	Splintery, Sub-Conchoidal
Crystal Habit：Occurs as well-formed coarse sized crystals also nodular, botryoidal, rarely columnar or fibrous; granular, massive
Geological Setting：Hydrothermal veins; cavities in sedimentary rocks; as a cementing material in sandstones; as hot springs deposits.