apatite-gemstone

ID: skos/Commodity/MIN4EU/apatiteGemstone

Item class: Concept

Label (en): apatite-gemstone

Label (hu):

Definition (en): Apatite is a group of phosphate minerals, usually referring to hydroxylapatite, fluorapatite and chlorapatite, named for high concentrations of OH−, F− and Cl− ions, respectively, in the crystal. The formula of the admixture of the four most common endmembers is written as Ca10(PO4)6(OH,F,Cl)2, and the crystal unit cell formulae of the individual minerals are written as Ca10(PO4)6(OH)2, Ca10(PO4)6(F)2 and Ca10(PO4)6(Cl)2. - http://en.wikipedia.org/wiki/Apatite

Definition (hu):

Concept scheme: Commodity

Broader concept: MIN4EU list of commodities