福建永定务田钼矿床控矿因素与成因探讨

On the Ore-controlling Factors and Genesis of the Wutian Molybdenum Deposit in Yongding County,Fujian Province

永定务田矿区处于北东向政和—大埔断裂带与北西向上杭—云霄断裂带交会处,钼矿体呈缓倾角脉状产于含黑云母花岗岩中,连续性较好,深部隐伏矿体较多。北东向断裂、斜节理是主要导矿、容矿构造。据其地质背景、地球化学、地球物理特征及深部钻孔资料综合分析,初步认为矿床成因类型属中高温热液交代充填型钼矿床。

The Wutian deposit existes in the metting of the NE Zhenghe--Dapu fault zone and the NW Shanghang--Yunxiao fault zone. The orebody is discovered in the biotite-bearing gran- ite with low angle veins that continuity is better. Deep concealed orebodies are more. NE trending faultes and oblique jointed are the main primare-ore and ore-bearing structure. Ac- cording to its geological setting, geochemical and geophysical characteristics and the deep borehole data, it is considered that it belongs to the medium-high temperature hydrothermal metasomatism in filling type molybdenum deposit.