Lithium enrichment of the magmatic-hydrothermal fluid in albite-spodumene pegmatite from Lijiagou, Eastern Tibetan Plateau: Evidence from fluid inclusions

• DOI: 10.1016/j.oregeorev.2023.105685
• Publication Date: 2023-09-19T16:39:38Z
• Authors: Yabin Yuan; Bin Chen; Linbo Shang; Eszter Sendula; I-Ming Chou
• Keywords: Pegmatite; Spodumene; Nepheline

Albite-spodumene pegmatites, which are remarkable resources of Li worldwide, may experience both magmatic-hydrothermal transition and sub-solidus hydrothermal alteration during their formation evolution. However, fluids involved in the different stages evolution a spodumene-bearing pegmatitic systems not well defined, especially at stage. In Lijiagou deposit, western Sichuan Province, fluid inclusions typical albite-spodumene pegmatite were studied to determine degree enrichment potential for lithium mineral crystallization Micro-petrographic analyses identified types either primary, pseudo-secondary or secondary origin containing devitrified silicate glass. The presence these suggests that underwent stage post-crystallization process over its results inclusion LA-ICP-MS show aqueous ± carbonic represented by type 1a 1b carry significant amount Li, with Na predominating cation budget fluids. exhibit compositional characteristics high abundance this system relative K lies within uppermost range those reported from lithium-cesium-tantalum systems. This is consistent elevated incorporation quartz pegmatite. be used imply mineralization system.