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

Yuan, Yabin1,2; Chen, Bin2; Shang, Linbo3; Sendula, Eszter4; Chou, I-Ming1

2023-11-01

10.1016/j.oregeorev.2023.105685

ORE GEOLOGY REVIEWS   Impact Factor & Quartile

0169-1368

1872-7360

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

Albite-spodumene pegmatite LCT pegmatite Fluid inclusions Li enrichment in magmatic-hydrothermal fluid Lijiagou deposit

SCI

English

Corresponding

National Natural Science Foundation of China["42030303","41872051","41973055","42130109","42303032"] ; Stable Support Plan Program of Shenzhen Natural Science Fund["GXWD20201230110313001","20200925161932001"]

Geology ; Mineralogy ; Mining & Mineral Processing

Geology ; Mineralogy ; Mining & Mineral Processing

WOS:001083041000001

ELSEVIER

GEOSCIENCES

Web of Science

1.Chinese Acad Sci, Inst Deep Sea Sci & Engn, CAS Key Lab Expt Study Deep Sea Extreme Condit, Sanya 572000, Hainan, Peoples R China
2.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen 518055, Peoples R China
3.Chinese Acad Sci, State Key Lab Ore Deposit Geochem, Inst Geochem, Guiyang 550081, Peoples R China
4.UiT Arctic Univ Norway, Dept Geosci, N-9037 Tromso, Norway

Yuan, Yabin,Chen, Bin,Shang, Linbo,et al. Lithium enrichment of the magmatic-hydrothermal fluid in albite-spodumene pegmatite from Lijiagou, Eastern Tibetan Plateau: Evidence from fluid inclusions[J]. ORE GEOLOGY REVIEWS,2023,162.

Yuan, Yabin,Chen, Bin,Shang, Linbo,Sendula, Eszter,&Chou, I-Ming.(2023).Lithium enrichment of the magmatic-hydrothermal fluid in albite-spodumene pegmatite from Lijiagou, Eastern Tibetan Plateau: Evidence from fluid inclusions.ORE GEOLOGY REVIEWS,162.

Yuan, Yabin,et al."Lithium enrichment of the magmatic-hydrothermal fluid in albite-spodumene pegmatite from Lijiagou, Eastern Tibetan Plateau: Evidence from fluid inclusions".ORE GEOLOGY REVIEWS 162(2023).