摘要
与火山、次火山隐爆作用有关的中酸性隐爆角砾岩型矿床是一种重要的矿床类型。中酸性隐爆角砾岩型金、银-金、铀、钨-钼-铜-铅-锌典型矿床的矿石、蚀变围岩稀土元素研究表明,不同矿种的矿床稀土元素地球化学具有极强的相似性和弱差异性。矿床稀土元素总量w（REE）=69.7×10-6~245.27×10-6,单个矿床稀土元素总量变化不大;稀土元素配分曲线呈左高右低缓倾型;轻、重稀土元素比值LREE/HREE范围为3.31~14.5,可划分为3.31~9.52和7.3~14.5两个区间;铕异常值δ（Eu）=0.15~1.21,呈现出强负异常至弱或无异常的地质特征。
The volcanism and sub-volcanism-related intermediate-acid cryptoexplosive breccia type metal deposit is an important ore deposit including Au,Ag-Au,U,W-Mo-Cu-Pb-Zn ore deposits.Researches on ore and wall rock alteration of the type show strong similarity and less discrepancy for their REE geochemistry characterized by total REE in range 69.7×10-6 to 245.27×10-6 and less variation of the range for each deposit,right-inclined REE pattern,LREE/HREE in range 3.31 to 14.5,and concentration betwem 3.31 to 9.52 and 7.3 to 14.5 and strong Eu negative to weak anomaly or non-anomaly.
出处
《地质找矿论丛》
CAS
CSCD
2011年第1期23-27,50,共6页
Contributions to Geology and Mineral Resources Research
关键词
稀土元素
地球化学
中酸性隐爆角砾岩型
金属矿床
rare earth element
geochemistry
intermediate-acid crytoexplosive breccia-type metalliferous deposit
