Fluorite (also called fluorspar) is a halide mineral composed of calcium fluoride, CaF2. It is an isometric mineral with a cubic habit, though octahedral and more complex isometric forms are not uncommon. Crystal twinning is common and adds complexity to the observed crystal habits.
Category Halide mineral
Color: Colorless, white, purple, blue, green, yellow, orange, red, pink, brown, bluish black; commonly zoned
Crystal habit Occurs as well-formed coarse sized crystals also nodular, botryoidal,[...]