河南西簧钒矿V2矿体地质特征及找矿标志

Geological characteristics and prospecting criteria of the No. V2 orebody in the Xihuang vanadium deposit,Henan

西簧矾矿区位于东秦岭造山带内,成矿区带属于秦岭造山带金银多金属成矿区,矿体呈层状产出于下寒武统水沟口组底部的炭质页岩段内,硅质岩为矿体底板,含炭灰岩为矿体顶板。矿体严格受下寒武统水沟口组控制,为典型的沉积型钒矿,矿石的化学成分主要有SiO2、Al2O3、Na2O、CaO、K2O、MgO等,有用组分为V2O5,钒矿石属酸性矿石类型。寒武系下统水沟口组中下段地层为矿体的含矿地层,突出地表的硅质岩及山脊突然降低的部位为找矿的重要标志,此外,人为开采及地球化学特征也为矿床的找矿标志。该矿床在深部尚有待开发的潜力。

The Xihuang vanadium mine located in the Eastern Qinling orogenic belt,as part of the Qinling gold and silver polymetallic mineralization area. The ore bodies occur in the carbonaceous shale at the bottom of the Shuigoukou group of Lower Cambrian system as layered form. The hanging wall and footwall are carbonaceous limestone and siliceous rocks respectively. The orebody is strictly controlled by the Lower Cambrian Shuigoukou formation and the deposit belongs to the typical sedimentary vanadium deposit. The chemical compositions of the ore are mainly SiO2,Al2O3,Na2 O,CaO,K2 O and MgO,etc.,and the useful composition is V2O5. The vanadium ore is acidic ore types. Main prospecting criteria were summarized as followings： 1） lower and middle sections of Shuigoukou formation of Lower Cambrian system; 2） ourcropped prominently siliceous rocks and ridges sudden drop site; 3） geographical sites where suddenly change from the ridge point; 4） geochemical characteristics; 5） human exploitation sites. The deposit remains potential to be developed in the depth.