Crystal chemical characteristics of ellestadite-type apatite: implications for toxic metal immobilization

• Main Authors: Fang, Ya Nan, Ritter, Clemens, White, Timothy John
• Other Authors: School of Materials Science & Engineering
• Format: Article
• Language: English
• Published: 2017
• Subjects: Toxic metals; Apatites
• Online Access: https://hdl.handle.net/10356/85607; http://hdl.handle.net/10220/43743
• Institution: Nanyang Technological University

The ellestadite apatites Ca10[(SiO4)x(PO4)6−2x(SO4)x]Cl2 were studied by powder X-ray and neutron diffraction to establish baseline crystallographic data. These synthetic materials, unlike mineral specimens that are well equilibrated, show no Si/P/S ordering and conform to P63/m symmetry. Phosphate-...