摘要
以含矿热液活动为联结点,将赋矿围岩与岩体作为一个整体系统,研究罕达盖矽卡岩型铁铜矿化试验区钻孔内的岩石经含矿热液作用后稀土元素的含量变化,认为依据稀土元素地球化学特征不仅可以判断矿床(化)成因,还可以识别成矿流体特征及成矿元素迁移的物理—化学控制因素。研究表明,试验区矽卡岩型铁铜矿石是含矿热液接触交代形成的;含矿热液温度相对较高,具有贫∑REE、富HREE和Ce等特征。这些发现使应用稀土元素地球化学特征进行找矿具备了一定的潜力,为扩展地球化学勘查新指标奠定了基础。
Regarding host rocks and magmatic rocks as a whole system connected by ore fluid activity,the authors systematically investigated the REE behaviors of magmatic rocks,host-rocks and skarns influenced by ore-bearing fluid in the Handagai skarn-type Fe-Cu mineralization area.The REE compositions of Fe-Cu ores imply that they were derived from the contact metasomatism and the ore-forming hydrothermal fluid had relatively high temperature.The authors infer that the ore fluids should be characterized by ∑REE depletion and relative enrichment of ∑HREE and Ce.Results of the study indicate that the application of REE geochemistry to mineral prospecting has great potential.
出处
《物探与化探》
CAS
CSCD
北大核心
2011年第6期727-732,共6页
Geophysical and Geochemical Exploration
基金
国家科技支撑计划项目(2006BAB01A10)
关键词
稀土元素
含矿热液特征
物理—化学条件
矿化成因
罕达盖矽卡岩型铁铜矿化
REE
ore-bearing fluid feature
physical-chemical condition
mineralization origin
Handagai skarn-type Fe-Cu mineralization
