Petrology and geochemistry of Li-bearing pegmatites and related granitic rocks in southern Thailand: implications for petrogenesis and lithium potential in Thailand

Lithium (Li) can be found in many minerals, including lepidolite. Lepidolite is pegmatite-related tin deposits the Phang Nga area southern Thailand. According to their field occurrence, petrography, mineral chemistry, and whole-rock geochemistry, Li-bearing pegmatites granitic rocks study linked Thailand as part of SE Asian belt. The are characterized by an abundance lepidolite, K-feldspar, plagioclase, quartz with some accessory minerals fluorite, cassiterite, apatite, monazite, beryl. show various compositions, porphyritic biotite–muscovite granite, biotite muscovite—tourmaline granite different proportions quartz, biotite, muscovite, tourmaline. Whole-rock geochemistry indicates that both have a close relationship rooted peraluminous S-type affinity. evolved from highly fractionated comparable Western Belt Granite enrichment large-ion lithophile elements (e.g., Rb K) depletion Ba, Nb, Ti together similar rare Earth element patterns reflect collisional setting indicating Sibumasu–West Burma West Burma—Indo-Burma collisions during Cretaceous Eocene. crystallization pressure—temperature conditions these were 3.49–4.25 kbar 622°C–675°C, respectively, emplacement depth 13–15 km. had relatively high average Li grade compared those other world.