广东白云地铅锌矿成矿地质特征及成矿机制  

Geological Characteristics and Metallogenic Mechanism of Baiyundi Pb-Zn Deposit in Guangdong Province

作　　者：易金 

机构地区：[1]广东省有色地质勘查院

出　　处：《现代矿业》2017年第7期136-140,共5页Modern Mining

摘　　要：白云地铅锌矿床是三水盆地南西缘矿集区中新发现的一个规模接近大型的铅锌矿床,矿床成因类型属中—低温热液破碎带充填型,成矿作用与断裂构造关系密切。在总结矿床地质特征的基础上,对构造控矿特征进行了分析,并结合区域成矿作用探讨了其成矿机制。推测其成矿机制可能为三水盆地成矿流体在新生代岩浆作用的能量支持下,经西江断裂上移后,通过高要—惠来深断裂带由东往西运移至矿区,并在高要—惠来深断裂带旁侧的次级张性断裂中因温度、压力快速下降而析出成矿。Baiyundi Pb-Zn deposit is a medium-lowtemperature hydrothermal deposit newly discovered in the southwestern marginal area of Sanshui Basin,the deposit occurs in the fault fracture zone and its mineralization is closely related to the fault structure. Based on studying the deposit geological characteristics,the tectonic ore-controlling characteristics of the deposit is analyzed,besides that,combing with the regional metallogenic process,the metallogenic mechanism of the deposit is studied in depth. The results show that the metallogenic mechanism of the deposit can be described that under the energy support of Cenozoic magmatism,ore-forming fluid of Sanshui Basin is moved to the Baiyundi deposit through Xijiang Fault and Gao-Huilai Fault from the east to west of the mining area,and it is precipitated in the secondary tensile fault of Gaoyao-Huilai Fault under the conditions of the rapid drop of temperature and pressure. The above discussion results related to the geological characteristics and metallogenic mechanism of Baiyundi Pb-Zn deposit in Guangdong Province can provide some reference for further conducting prospecting and exploration of Pb-Zn deposit in the mining area and its adjacent area.

关 键 词：铅锌矿 地质特征 控矿构造 区域成矿作用 成矿机制 

分 类 号：P618.4[天文地球—矿床学]