甘肃省合作市德乌鲁岩体及外围金多金属成矿区成矿地质特征  

Geological Characteristics of the Gold and Multiple-Metal Mineralization Areas in the Deluwu Rock Body and Surroundings in Hezuo City,Gansu Province

作　　者：周俊烈[1] 随风春[1] 张世新 

机构地区：[1]甘肃有色地质勘查局天水总队,天水741025 [2]甘肃勘探者地质矿产有限公司,兰州730000

出　　处：《地质与勘探》2010年第5期779-787,共9页Geology and Exploration

基　　金：中国地质调查局国土资源大调查项目(编号:200010200116)资助

摘　　要：德乌鲁岩体及外围金多金属成矿区位于中秦岭海西褶皱带西段。区内矿产主要有金、锑、铜、铅、锌;矿化类型主要有蚀变岩型金(锑)矿化类型和矽卡岩型的铜砷、铜铅锌多金属矿化类型。各矿点在空间分布上,显示等间距分布的基本特征,受近南北向分布的断层蚀变破碎带控制。矿化蚀变主要有黄铁矿化、电气石化、硅化、绢云母化、毒砂化、辉锑矿化、次生蚀变以褐铁矿化、高岭土化。本文结合德乌鲁岩体及外围区域成矿特点、矿床分布规律、成矿地质特征、控矿因素,从本区的大地构造背景及区域构造活动特点等两个方面对区内成矿构造破碎蚀变带的形成进行了力学成因研究,并提出了本区今后找矿的主要方向。Abstract：The gold and multiple-metal mineralization areas in the Dewulu rock body and surroundings lie in the western section of the Caledonian fold belt in the central Qinling Mountains.Mineral resources of this mine district include gold,antimony,copper,lead,and zinc.Mineralization types are mainly altered rock-type gold （Sb） mineralization type and skarn-type copper arsenic,copper-lead-zinc mineralization type.The occurrence distribution in space of all ore sites shows a characteristic of equal-interval,controlled by the nearly north-south trending fault and alteration zones.Products of mineralization and alteration include pyrite,electrical petrochemical,silicification,sericite,arsenopyrite-oriented,antimony mineralization,secondary alteration to limonite,and kaolin.In this paper,based on the metallogenic characteristics,distribution rule of deposits,ore-forming geological characteristics,and ore-controlling factors of this region,from aspects of the tectonic setting and regional tectonic activity,we study the mechanism of mineralization structures in the fracture-alteration zones and suggest the ore-search direction in the future.

关 键 词：德乌鲁岩体 成矿地质特征 成矿构造力学成因研究 找矿方向 

分 类 号：P618.51[天文地球—矿床学]