20864 - Lustrous Yellow Green Apatite Crystals on Feldspar Matrix - Imilchil (Morocco) KemKem_Beds_Fish_Assemblage Netherlands Journal of Geosciences 84:
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Description
Netherlands Journal of Geosciences 84: 167-175
brittle mineral
Christiansen
Incredible plate with seven specimens of this species in which three of them exceptionally preserve their antennae
in the western
20864 - Lustrous Yellow Green Apatite Crystals on Feldspar Matrix - Imilchil (Morocco) KemKem_Beds_Fish_Assemblage Netherlands Journal of Geosciences 84:Apatite 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.
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