福建省桂溪矿区铅锌多金属矿床地质特征及找矿标志

Fujian province and prospecting of lead-zinc polymetallic deposit geological characteristics of Guixi area

矿体为产于变质岩断裂中的脉状铅锌多金属矿。矿体产于变质岩的断裂带中,中低温热液充填交代型。属第Ⅱ勘查类型。矿石类型为原生硫化矿石。断裂带的蚀变明显,主要有硅化、黄铁矿(褐铁矿)化、绿泥石化等。在地表露头见到绿泥石化,往往可找到铅锌矿化。断裂带在本区呈北东走向。断裂带在本区呈北东走向。地表断裂带Pb含量>0.1%,深部就有可能存在工业矿体。所以蚀变断裂带是本区找矿的重要标志之一。

Ore vein lead-zinc polymetallic deposit occurs in the metamorphic rocks of the fracture. The ore bodies are found in the fault zone of metamorphic rocks, and the hydrothermal filling and replacement of the medium and low temperature. Type II exploration. Ore type as primary sulfide ore. Fracture zone altered significantly, mainly are silicification, pyrite(limonite), chloritation etc.. In the surface outcrop to see the green mud, often can be found in lead and zinc mineralization. The fault zone is in the direction of the north east of the area. The fault zone is in the direction of the north east of the area. Surface fault zone Pb content > 0.1%, there may exist in the deep industrial ore bodies. Therefore, alteration fault zone is one of the important marks of ore prospecting in this area.