福建仙游砺山钼矿地质特征及成因探讨

仙游砺山一带晚侏罗—早白垩世岩浆活动频繁,所形成的各类火成岩富含Mo、Pb、Zn、Cu等微量元素,为钼矿床形成提供了丰富的物质基础。区内较发育的北东向构造为岩浆期后热液活动及成矿提供了通道和空间位置。岩浆期后碱性热液为元素的活化、迁移、富集提供了热动力及催化作用。三大因素共同促进了该区蚀变矿化和钼矿床的形成。

On Geologic Characteristics and Genesis of the Lishan Molybdenum Deposit in Xianyou County of Fujian Province

During Late Jurassic and Lower Cretaceous,in the Xianyou area of Fujian Province the magmatic activity is frequent and forms igneous rocks which are rich in many microelements such as Mo,Pb,Zn,Cu,which provide abundant materials for the formation of mineral deposits.The well-developed northeast-trend geological structures become channels and rooms of hydrothermal movement and mineralization in the magmatic post-stage.The alkaline hydrothermal fluid formed in the magmatic post-stage is a thermal power and catalysis of activation,transference and enrichment for the about-mentioned elements.The three factors accelerate the alteration and mineralization and help to form molybdenum deposits in the surveyed area.