冀西麻棚地区金银多金属矿床区域成矿地质特征  

Regional Metallogenic Characteristics of the Au-Ag Polymetallic Deposits in Mapeng Area,Western Hebei Province

作　　者：陈超[1,2] 牛树银[1,2] 高银仓[3] 王宝德[2] 孙爱群[2] 马宝军[2] 李英杰[2] 王自力[4] 

机构地区：[1]中国地质大学,北京100083 [2]石家庄经济学院,河北石家庄050031 [3]石家庄综合地质大队,河北石家庄050081 [4]天津华北地质勘查局,天津300170

出　　处：《黄金科学技术》2012年第3期10-17,共8页Gold Science and Technology

基　　金：国家自然科学基金项目"阜平幔枝构造轴部麻棚地区的成矿作用研究"(编号:40872137);公益性行业科研专项经费项目"中国典型金属矿科学基地研究"(编号:200911007);河北省自然基金项目"数值模拟技术在矿脉分布定量预测中的应用--以石湖金矿为例"(编号:D2008000534);河北省科技厅项目"加权特征分析在多金属找矿预测中的应用研究"(编号:11277106D)联合资助

摘　　要：近年来,麻棚地区金银多金属矿集区已经成为太行山中段的重要矿产地,先后发现金银多金属矿床(点)25处,大多位于岩体周围,成矿地质条件优越,但目前具开采价值的矿区只有8处,特别是大型矿床只有石湖金矿,因而急需总结区域成矿规律,进一步指导找矿。为探究麻棚岩体周边成矿的关联性,选取麻棚岩体东南侧石湖金矿和西南侧北营西沟银矿进行典型矿床地质特征对比分析,同时经区域成矿地质条件研究,发现岩体周边矿床(点)在区域构造、地层建造、岩浆活动、围岩蚀变及矿脉特征等方面都具有很大的相似性,认为它们属于燕山期统一的成矿序列事件。在此基础上,总结成矿规律和成矿模式,并指出了区域找矿方向。In recent years,the mineralization-concentrated regions with gold-silver polymetallic deposits in Mapeng area have been famous as superior ore-forming geological conditions in the whole middle segments of Taihang mountains soon.Twenty-five gold-silver polymetallic deposits（occurrences） have been successively discovered,most of them located around in Mapeng granitic intrusion.But currently eight mineral occurrences with exploiting value have been discovered,in which especially the Shihu gold deposit has become the only large ore deposit,so the re- gional metallogenic regularities and the metallogenic relevance in these deposits should be summarized in order to guide further ore-prospecting work.Through studying regional geological conditions and contrastively analyzing typical ore deposits with Shihu gold deposit on the southeast of Mapeng granitic intrusion and Beiyingxigou silver deposit on the southwest of Mapeng granitic intrusion,this paper finds the deposits （occurrences） surrounding the rock have the great analogues in regional structure,strata,magmatic activity,wall-rock aheration,lode features,etc.and they belong to yanshanian unified metallogenic series events.Based on this,we summarize the regional metallogenic regularities and the regional metallogenic model,and point out the regional prospecting direction.

关 键 词：幔枝构造 成矿特征 成矿模式 金银多金属矿床 太行山中段 麻棚地区 

分 类 号：P618.5[天文地球—矿床学]