Based on previous research result of petrologic and metallogenetic characteristics, the authors performed a lot of detailed work on geochemistry, isotope geochemistry and geochronology. Petrochemical research shows that the granite is rich in silicon and alkali, and poor in Fe, Ti, Mg and Mn, thus belonging to high-k calc-alkaline series. Petrochemical research shows that the granite is strongly depleted in Eu(δEu<0.1), Ba, Sr, P, Ti and obviously enriched in Rb, Nb+Ta, W, Mo, Bi, Li, etc. The Rb-Sr isochron age is (128.2±1.1) Ma, with ISr being 0.709 79, suggesting that the original rock had obvious crustal characteristics. The results obtained by the authors have some guiding significance in the study of Mesozoic granite-related metal ores of Yanshanian period, especially in the prospecting for niobium-tantalum, tungsten, tin, rubidium and other rare metal deposits.
