Alforsite

• Ba-Cl-O-P
• Ba-Cl-Eu-O-P
• Ba-Cl-Eu-Gd-O-P
• Ba-Cl-Eu-O-P-Tb
• Ba-Cl-Eu-La-O-P
• optical properties
• luminescence
• electronic and electrical properties
• photoluminescence spectra
• valence or charge transfer
• chalcogen
• apatite
• alkaline
• alforsite
• chloride
• hexagonal