摘要
云南会泽超大型铅锌矿床是川滇黔铅锌成矿区大型富铅锌矿床的典型代表。本文在研究矿区成矿地质背景、划分断裂构造岩类型及构造体系的基础上 ,提出 NE构造带 (华夏系 )是会泽铅锌矿最主要的成矿构造体系 ,概括了构造控矿特征 ;以控矿断裂带中的构造岩、矿脉为主要研究对象 ,分析不同方向断裂构造岩的稀土元素组成特征 ,按其特征和配分模式 ,将构造岩 (矿石 )划分为 7种类型 :Eu富集 -开阔“W”型、Ce富集 - Eu弱亏损-平缓型、平缓型、HREE- L REE较富集 -开阔“V”字型、Eu强亏损 -下斜型、Eu亏损 -下斜型、Eu亏损 -平缓型 ,其中 NE向断裂带中的 Ce富集 - Eu弱亏损 -平缓型与 Eu富集 -平缓型模式的构造岩是成矿预测的微观标志之一。
The large scale Huize Pb Zn deposit is a typical ore deposit occurred in the Sichuan Yunnan Guizhou Pb Zn mineralization district.On the basis of study on the geological background,classification of fault rocks and division of tectonic systems,the ore controlling characters were summarized and the ore forming tectonic system was proposed.The study of REE compositions in fault rocks occurred in faults with different directions showed that the fault rocks could be divided into 7 types:Eu excess with wide ″W″ pattern,Ce excess Eu depletion with gentle pattern,HREE LREE excess with wide ″V″ pattern,Eu strong depletion with inclined pattern,Eu depletion with inclined pattern and Eu depletion with gentle pattern.of the 7 types,fault rock in the northeast faults with Ce excess Eu depletion pattern and Eu excess with gentle pattern appeared to be the indicators for the Pb Zn minenlization prediction.
出处
《矿物岩石》
CAS
CSCD
北大核心
2000年第4期11-18,共8页
Mineralogy and Petrology
基金
科学技术部攀登计划预选资助项目!(编号 :95 -预 -39)
云南省中青年学术和技术带头人培养经费及会泽铅锌矿项目
关键词
构造控矿
稀土元素
断裂构造岩
铅锌矿床
成矿构造
Ore controlling structures
REE composition
Fault rock
Lead zinc deposit
Huize,YunD
