Apatite

Apatite is a mineral that is composed of calcium phosphate, the chemical formula is Ca5(PO4)3(OH,F,Cl). Other minerals includes hydroxylapatite and fluorapatite. Apatate is a common mineral and is an important mineral in the formation of igneous, sedimentary, and metamorphic rocks. It can also be found in biological tissues such as bones and teeth.

Species: variety of phosphate minerals ♦ Chemistry: Ca5(PO4)3(OH,F,Cl) ♦ Color: colorless, white, yellow, green, blue, purple, and brown ♦ Cleavage: flat plane ♦ Fracture: conchoidal ♦ Transparency: transparent to translucent or opaque ♦ Luster: vitreous ♦ Crystal System: hexagonal ♦ Moh's Hardness: 5 ♦ Localities: Canada, Russia, Brazil, Morocco, USA.