Apatite is a calcium phosphate. Many times we also speak of the apatite group as this mineral can be found under three different terms: fluorapatite, which represents the term rich in F and also the most widespread, hydroxyapatite, which represents the term rich in OH, and chlorapatite, which represents the term rich in Cl and also the rarest. The name apatite was assigned by the German mineralogist Abraham Gottlieb Werner in 1786 and derives from the Greek verb "apatáo" "I deceive", alluding to the fact that this mineral has been exchanged many times with other minerals due to the vast range of colors in which you can find it, colors ranging from yellow to electric blue.
Dimensions
Height (cm): about 2
Depth (cm): 1.5-2
Width (cm): 2.5-3
Weight (g): 10
Property
Chemical Formula: Ca5 (PO4) 3 [F, OH, Cl]
Mohs scale: 5
Relative density: 3.1-3.2
Crystalline System: Hexagonal
