内蒙古烧饼沟铜多金属矿地质特征及找矿前景
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摘要
通过矿床地质特征及成岩、成矿因素研究,认为海西晚期发生挤压造山产生NE向褶皱,沿褶皱轴海西晚期似斑状中细粒花岗闪长岩、石英闪长岩侵入,在与西别河组片岩的接触带内侧,形成接触破碎蚀变岩型—裂隙充填型的热液铜多金属矿床,矿区内蚀变矿化多赋存在北东向构造内。围岩蚀变较为发育,与成矿关系密切的为硅化、黄铁矿化、碳酸盐化、萤石化等。文章在以往地质成果的基础上,通过成矿地质背景、矿区地质概况和矿床地质特征的阐述,着重对成矿控制因素、矿床成因及找矿标志进行分析,认为该区具有较好的成矿地质条件和找矿前景。
Through the geological features of ore deposit and study on geochronology of mineralization, the paper thinks polymetallic deposit is high temperature hydrothermal type deposit, which formed by contact metasomatic between acidic magmatic hydrothermal in Yanshan period and wall-rock.The main structure line is in the northeast, and distribution of ore deposits are controlled by deep fault belt, the mining area in the altered mineralized occurs in the northeast construction.Mineralization and alteration of the study area is developed, related to the ore-forming silicification, greisenization, hornfels, Pyrite mineralization carbonation, fluorite mineralization etc.On the basis of the previous geological results, this paper analyzes the genesis of ore deposit, ore material source and metallogenic regularity by elaborated on the metallogenic geological background, geological survey of mining area and geological characteristics of the deposit, thinks the area has good geological conditions and prospecting foreground.
Through the geological features of ore deposit and study on geochronology of mineralization, the paper thinks polymetallic deposit is high temperature hydrothermal type deposit, which formed by contact metasomatic between acidic magmatic hydrothermal in Yanshan period and wall-rock.The main structure line is in the northeast, and distribution of ore deposits are controlled by deep fault belt, the mining area in the altered mineralized occurs in the northeast construction.Mineralization and alteration of the study area is developed, related to the ore-forming silicification, greisenization, hornfels, Pyrite mineralization carbonation, fluorite mineralization etc.On the basis of the previous geological results, this paper analyzes the genesis of ore deposit, ore material source and metallogenic regularity by elaborated on the metallogenic geological background, geological survey of mining area and geological characteristics of the deposit, thinks the area has good geological conditions and prospecting foreground.
引文
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内蒙古自治区地质矿产局.1991.内蒙古自治区区域地质志[M].北京:地质出版社.
邵和明,张履桥.2002.内蒙古自治区主要成矿区(带)和成矿系列[M].内蒙古地质矿产勘查开发局.
邵济安,韩庆军,张任枯,等.2000.内蒙古喀喇沁地区堆晶岩及其寄主岩石的同位素年龄[J].地球化学,16(3):385-391.
王长明,张寿庭,邓军.2006.大兴安岭南段Cu多金属矿成矿时空结构[J].成都理工大学学报(自然科学版),33(5):478-484.
徐贵忠,边千韬,王艺芬.1998.额尔古纳造山带构造演化与成矿作用[J].地质科学,33(1):84-92.
杨忆,佘宏全,徐贵忠,等.1999.内蒙古柴胡栏子Au矿田燕山期岩浆岩与Au矿床[J].岩石学报,15(3):475-483.
翟明国,蒋少涌.2009.华北大陆边缘造山过程与成矿研究的重要进展和问题[J].岩石学报,3(11).
翟裕生,邓军,崔彬,等.1999.成矿系统及综合地质异常[J].现代地质,13(1):99-104.
翟裕生,王建平,彭润民,等.2009.叠加成矿系统与多成因矿床研究[J].地学前缘,12(6).
翟裕生.2003.成矿系统研究与找矿[J].地质调查与研究,26(3):129-135.