Apatite Crystal

Apatite is identified by the chemical formula Ca5(PO4). It forms in hexagonal crystals and is a rock phosphate mineral. Apatite can exist in many different forms, along with other minerals, as long as the base of apatite calcium (Ca5) and phosphorous (PO4) exist together. It's quite amazing looking, sometimes three-dimensional.

Apatite is a relatively common mineral that can occur in a variety of colors, including yellow, green, blue, and purple. It is an important mineral in the formation of igneous, sedimentary, and metamorphic rocks, and it can also be found in biological tissues such as bones and teeth.