福建松溪大林坑钼多金属矿床地质特征及成因初探  

On the Geologic Characteristics and Genesis of the Dalinkeng Molybdenum-polymetallic Deposit in Songxi County, Fujian Province

作　　者：刘诗光 

机构地区：[1]福建省地质调查研究院,福州350011

出　　处：《福建地质》2005年第3期134-140,共7页Geology of Fujian

摘　　要：松溪大林坑钼多金属矿床位于浦城—宁德北西向钼多金属成矿带的中段,矿体产于大林坑破火山口的北东侧,辉钼矿主要分布在近火山口的南园组火山岩的裂隙和放射状断裂中,钼矿体呈等轴圆状,而铅锌矿体则呈脉状赋存在远离火山口的放射状断裂中,围岩蚀变以中低温面状蚀变为主,具水平分带和垂直分带,成矿作用与隐伏中酸性(偏碱性)斑岩关系密切,属于火山热液-斑岩型矿床成因类型。The Dalinkeng molybdenum-polymetallic deposit is situated on the intermediate section of the Pucheng-Ninde molybdenum-polymetallogenic belt. The orebody is found in the northeastern side of the Dalinkeng caldera. The molybdenite is dispersed over the fissures and radiating fractures of Nanyuan Formation volcanic rock and the molybdenum orebodies are in the shape of an equiaxial round. The lead-zinc orebodies are discovered in the radiating fractures far away from the volcanic crater with occurrence in veins. The wall-rock alteration mainly is the intermediate-low temperature surfacing akeration with the horizontal zoning and vertical zoning. It is inferred that the ore-forming process has a close relation with buried intermediate-acidity （meta-alkality） porphyry. It belongs to the ore deposit of a volcanic hydrothermal and porphyry type.

关 键 词：钼多金属 地质特征 矿床成因 成矿模式 松溪大林坑 多金属成矿带 矿床成因类型 辉钼矿 矿床地质特征 福建 破火山口 铅锌矿体 松 围岩蚀变 

分 类 号：P618.2[天文地球—矿床学]