
Apatite
Apatite is the name for a mineral group as well as the generic term for many phosphates, but gem-quality apatite is a special gemstone found in a beautiful variety of colors. Apatite's various colors are often due to the presence of rare earth elements or natural irradiation
Apatite. ... Apatite is a group of phosphate minerals, usually referring to hydroxyapatite, fluorapatite and chlorapatite, with high concentrations of OH−, F− and Cl− ions, respectively, in the crystal.
Crystal habit: Tabular, prismatic crystals, massi...
Mohs scale hardness: 5 (defining mineral)
Category: Phosphate mineral
Crystal system: Hexagonal