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据产出在闽北中生代陆相长英质火山岩中受隐爆碎屑岩控制,以铀、银、钼共生为特征的570矿床流体包裹体及氢、氧同位素研究表明:570矿床成矿温度为150~180℃,成矿流体以富含HCO~-_3、F-、SO~2-_4、K+、Na+等组分为特征,铀主要以UO2(CO3)~2-_2、UO2(UO3)~4-_3、UO2F~2-_4、UO2F~-_3形式运移,成矿富集作用与两种不同成因水溶液(火山热液和大气降水)的混合有关。对火山岩、基底变质岩和花岗岩的铅、硫同位素及成矿元素地球化学研究表明:570矿床成矿物质来源与基底岩石(花岗岩及变质岩)关系密切,具多源特点,高溪花岗岩体和南园组火山岩是铀的主要贡献者,钼主要来自火山热液,而银主要来源于麻源群变质岩。
According to the output of the Mesozoic continental facies of the British in northern volcanic rocks controlled by cryptoexplosive clastic rock, uranium, silver, molybdenum symbiosis of 570 deposits characterized by fluid inclusions and hydrogen isotopes of hydrogen and oxygen research shows that: 570 metallogenic temperature of 150 ~ 180 ℃, the ore-forming fluids are characterized by the enrichment of HCO-3, F-, SO 2 2-, K +, Na + and other components. Uranium mainly consists of UO 2 (CO 3) 4-_3, UO2F ~ 2-_4, UO2F ~ -_3, and the metallogenetic enrichment is related to the mixture of two different genetic solutions (volcanic hydrothermal fluids and atmospheric precipitation). The lead and sulfur isotopes of volcanic rocks, basement metamorphic rocks and granites show that the metallogenic origin of the 570 deposit is closely related to the basement rocks (granite and metamorphic rocks) and has multi-source characteristics. The Gaoxi granite bodies and Nanyuan Formation volcanic rock is the main contributor to uranium, mainly from volcanic hydrothermal molybdenum, and silver mainly from Mayuan metamorphic rocks.