赣西北狮子岭稀有金属花岗岩的岩体特征、成因及对锂矿化的指示

Key Points

• This research aims to investigate the rock body characteristics and genesis of the Lion Ridge granite, focusing on its implications for lithium mineralization.
• Conducted detailed fieldwork to sample the granite body.
• Utilized optical microscopy, electron probe microanalysis (EPMA), and automated quantitative mineral parameter analysis (AMICS).
• Analyzed the occurrence, structure, and chemical composition of feldspar, zircon, and phosphate minerals.
• The concentration of P2O5 in feldspar and zircon increased from biotite granite to lithium (white) mica granite.
• Phosphate minerals transform from phosphophyllite to apatite, with lithium minerals crystallizing in yellow tourmaline-lithium mica granite.
• The closed environment of the Lion Ridge rock body helps retain lithium, leading to secondary lithium mica formation.