Geological Characteristics and Genesis of Tongkeng-taopingshan Molybdenum Polymetallic Deposit in Longyan City,Fujian Province
Tongkeng-taopingshan mining area is a molybdenum polymetallic deposit.The regional metallogenic geological background is analyzed and summarized in this paper,the distribution,petrological characteristics,intrusive stages,ore-bearing characteristics of magmatic rocks,and the relationship between mineralization zoning and alteration types and zoning of wall rocks.According to the results of isotopic chronology,the age of the Re-Os isotopic model of the molybdenite is(116.6±1.9)～(118.9±2.0)Ma,and the age of the granite porphyry is 122.1～127.1 Ma,it is concluded that the metallogenic and diagenetic processes in tongkeng-taopingshan mining area are simultaneous and belong to Early Cretaceous.The results of hydrogen,oxygen,and sulfur isotopes show that the ore-forming materials mainly come from the lower crust or upper mantle.By summing up,it provides a new idea for prospecting porphyry molybdenum deposit in the depth of this area and its surroundings.
molybdenum polymetallic depositgeological characteristicsgenesis of depositLongyan City of Fujian Province
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