新疆金矿火山岩微量及稀土元素地球化学特征

金矿火山岩微量元素以Th和Zr的明显正异常及Nb和Ti的明显负异常为特征。微量元素比值蛛网图模式曲线均呈微向左倾斜的多峰多谷曲线。过渡元素以Cr和Ni的明显负异常及Sc,Co,Cu明显正常为特征。过渡元素球粒陨石标准化曲线，也均呈微向右倾斜的W形曲线。稀土元素以稀土总量偏低，轻稀土富集，重稀土亏损，Eu具微弱异常至微弱正常为特征。稀土元素配分模式均呈微向右倾斜和近于水平的平滑曲线，陆相火山作用两类成矿岩浆建造－陆相火山岩与潜火山杂岩具有基本一致的微量元素和稀土元素地球化学特征。

The geochemistry character of trace elements and rare earth elements (REE) of volcanic rocks of gold deposit, Xinjiang

The trace elements of the continental volcanic rocks are characterized by clear positive anomalies of Th and Zr,and clear negative anomalies of Nb and Ti.The model curves of trace element ratio in cobweb map were all multi peak inclining gently to the right.Transitional elements were characterized by clear negative anomalies of Cr and Ni and clear positive anomalies of Sc,Co and Cu.The transitional element curves standardized by chondrite were all W type curves inclining gently to the right.REE are characterized by low REE amount,rich LREE,short of HREE and weak negative anomalies to weak positive anomalies of Eu.The distribution models of REE were all smooth curve inclining gently to the right or being almost horizontal.Two mineralization magmatic formation of the continental volcanism:continental volcanic rocks and cryptovolcanic complex are similar in geochemistry character of trace elements and REE.