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杂岩体位于浙江江山——绍兴火山岩带金华——巨县盆地西南端,由燕山晚期流纹质凝灰岩、流纹(斑)岩、次花岗斑岩和花岗岩组成。分布面积约230Km~3。(图1)根据岩性持征和形成次序分为三个类型(表一) 喷出岩中铀矿化为沥青铀矿——赤铁矿类型,矿化环绕花岗岩体外接触带分布;次火山岩中铀矿化为沥青铀矿——赤铁矿类型,矿体受隐爆角砾岩筒控制;侵入岩中铀矿化为沥青铀矿——赤铁矿——碳酸盐类型,矿体分布在钠交代体中。一、主要岩石类型(一)、喷出岩喷出岩主要由流纹质晶屑凝灰岩和流纹(斑)岩组成,呈宽缓的背斜分布。褶皱轴
Complex rock body is located in Zhejiang Jiangshan - Shaoxing volcanic belt Jinhua - Juxian basin southwest end, by the late Yanshan rhyolitic tuff, rhyolite (plagiogranite), sub-granite porphyry and granite composition. Distribution area of about 230Km ~ 3. (Fig. 1) is divided into three types according to lithology characterization and formation order (Table 1). The uranium mineralization in the expelled rocks is a uranium-hematite type, and the distribution of mineralized surrounding granite is in contact with the outer belt. Subvolcanic rocks The mid-uranium mineralization is a bitumen uranium-hematite type controlled by cryptoexplosive breccia tubes. The intrusive rocks are characterized by uranium mineralization as bitumen uranium-hematite-carbonate type, Distributed in sodium body. First, the main rock type (a), the jet rock exuded rock mainly composed of rhyolitic crystal tuff and rhyolite (plagioclase) rock, showing a slow anticlinal distribution. Fold axis