Fluorite - D01023

Crystal system	isometric.
Habit	massive, granular, botryoidal and sometimes fibrous or columnar; in crystal form as cubes, octahedrons and dodecahedrons.
Cleavage	perfect.
Fracture	subconchoidal to splintery.
Hardness	4
Specific Gravity	3.3
Color	extremely variable; it is completely colorless and transparent if pure; it can also be found as yellow, green, blue, pink, purple or black.
Luster	transparent to translucent and vitreous.
Streak	none.
Distinguishing features	when exposed to ultraviolet rays it fluoresces strongly.
Uses	used in the making of hydrofluoric acid, which is used in pottery; very clear crystals are used as spectrographic prisms.

Color

Catalog