22100 - Lustrous Yellow Green Apatite Crystals on Brecciated Matrix - Imilchil (Morocco) Harpes Enchodus oliveirai

Enchodus oliveirai

Orthoceras punjabiense

In the occlusion area still numerous sensory pits along both sides and within the tongue groove can be observed

Drotops sp: Fossilworks (Paleobiology Database)

• Arenig of Argentina

22100 - Lustrous Yellow Green Apatite Crystals on Brecciated Matrix - Imilchil (Morocco) Harpes Enchodus oliveiraiApatite is a group of phosphate minerals, usually referring to hydroxylapatite, fluorapatite and chlorapatite, with high concentrations of OH, F and Cl ions, respectively, in the crystal. The formula of the admixture of the three most common endmembers is written as Ca10(PO4)6(OH,F,Cl)2.