宁芜北段火山岩型金矿类型及找矿方向  

Types of volcanic rock gold deposits in northern Ningwu Basin and their prospecting direction

作　　者：高丽坤[1] 邹芝红 李书春[1] 蔡卫东[1] 张亚男[1] 赵青友[1] 

机构地区：[1]江苏省地质矿产局第一地质大队,江苏南京210041

出　　处：《矿产与地质》2015年第4期427-432,共6页Mineral Resources and Geology

基　　金：江苏省地质矿产勘查局2012年地质勘查基金项目:宁芜(江苏省境内)火山岩型金矿找矿靶区优选;编号:苏地矿发[2012]30号资助

摘　　要：宁芜北段是长江中下游重要的火山岩型金矿成矿远景区。金矿类型繁多,主要有火山热液充填脉型金矿、陆相火山―沉积期后热液充填交代型金矿、蚀变破碎带型金矿、爆发角砾岩筒型金矿、铁帽型金矿以及伴生金。矿床主要受NNE、NW向区域性大断裂及其派生次级断裂控制,与安山质火山角砾岩、辉石闪长玢岩关系密切。梅山地区、铜井地区碱性火山岩内及外围、谷里地区及宁芜北段东部隆起带是今后的找矿方向。Northern Ningwu Basin is an important volcanic rock type gold mineralization prospect area inside the regions along the middle and lower reaches of Yangtze River. Various types of gold deposits in this area include volcanic hydrothermal filling vein type gold deposit, continental volcano-post depositional hydrother- mal filling metasomatic gold deposit, alteration fracture zone type gold deposit, diatreme breccia pipe type gold deposit, gossan type gold deposit and associated gold deposit. The deposits are primarily controlled by NNE- and NW-trending regional maior fractures and their derived subsidiary fractures, and they are closely related to andesitic volcanic breccia and pyroxene diorite porphyrite. The prospecting direction of this area are interior of the alkaline volcanic rocks and its peripheries in Meishan area and Tongjing area, as well as the uplift zone in Gull area and eastern part o{ northern Ningwu Basin.

关 键 词：金矿类型 火山岩型 找矿方向 宁芜北段 

分 类 号：P618.51[天文地球—矿床学]