甘肃省敦煌市塔水井东钒矿地质特征及找矿方向

Geological Characteristics and Prospecting Direction of Dongshui Mine in Tashuijing, Dunhuang City, Gansu Province

塔水井东钒矿大地构造位置归属哈萨克斯坦板块(Ⅰ2),马鬃山中间地块(Ⅱ3)的马鬃山地体北缘(Ⅲ2^3)。矿体产于寒武系西双鹰山组二段底部,主要岩性为炭质板岩、含炭硅质板岩,赋存在向斜各含矿层中,分布形态,产状严格受其含矿层为控制。矿体形态以层状,似层状为主,受NW^SE走向的向斜控制,与向斜形态一致。该矿床属于严格受岩性、地层层位控制的沉积变质型钒矿床。

The tectonic location of the vanadium deposit in eastern Tashuijing belongs to Kazakhstan plate(Ⅰ2)and the northern margin of Mazongshan body(Ⅲ2^3)in the middle of Mazongshan block(Ⅲ3).The orebody occurs at the bottom of the second member of Xishuangyingshan Formation in Cambrian.Its main lithology is carbonaceous slate and carbonaceous siliceous slate.It occurs in various ore-bearing strata of syncline,and its distribution pattern is strictly controlled by its orebearing strata.Orebody morphology is layered and layered,controlled by NW-SE strike syncline,which is consistent with syncline morphology.The deposit is a sedimentary metamorphic vanadium deposit in the early stage of transgression,formed in the continental margin Bay(basin)-shallow sea environment and controlled by lithology and stratigraphic horizons.