赣南双坑铀矿床围岩蚀变及其地球化学特征

Alteration and Its Geochemical Characteristics of the Wall Rocks in Shuangkeng Uranium Deposit in the South of Jiangxi Province

文章阐述了赣南双坑铀矿床的近矿围岩蚀变特征,指出与成矿密切相关的围岩蚀变主要有赤铁矿化、水云母化、绿泥石化和碳酸盐化。双坑铀矿床的矿化蚀变岩石元素地球化学研究表明,从矿化中心至围岩,V、Mo、Bi、Cu含量变化趋势与U一致,具有正相关性;与铀密切相关的元素为V、Sb、Pb、Bi、HREE、Be、Co等。这些元素可作为该区铀成矿的地球化学标志。

This paper studied the alteration characteristics of near ore wallrocks in Shuangkeng uranium deposit.It was found that the main wallrock alterations are chloritization, carbonation, hematitization and hydromicazation.From mineralization center to wallrock,geochemical analysis result of rocks from the deposit suggested that the change of V,Mo,Bi,Cu concentration is consistent with U,indicating that uranium content bears positive relation to V,Sb,Pb,Bi, HREE,Be,Co.These characteristics elements can be used as the geochemical signs for uranium exploration.