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Granites are widespread in Guangxi Province and distributed in four tecto-magmaticzones.Geochemical characteristics of these Mesozoic granites can be outlined as:(1)petro-chemically rich in silica,alkali and volatiles;(2)low oxidation ratio and relatively highAl index and K_2O/Na_2O ratio.As indicated by their geochemical,petrological and minera-logical features,many granites in Guangxi belong to S-type,frequently associated with mi-neralizations of rare-earth,tin,tungsten niobium and tantalum.
Granites are widespread in Guangxi Province and distributed in four tecto-magmaticzones. Geochemical characteristics of these Mesozoic granites can outlined as: (1) petro-chemically rich in silica, alkali and volatiles; (2) low oxidation ratio and relatively high Al index and K 2 O / Na 2 O ratio. As indicated by their geochemical, petrological and minera-logical features, many granites in Guangxi belong to S-type, frequently associated with mi-neralizations of rare-earth, tin, tungsten niobium and tantalum.