盘龙铅锌矿床成因及成矿模式

Genesis and metallogenic model of the Panlong lead-zinc Deposit

在矿床地质、地球化学研究的基础上,总结了广西武宣县盘龙铅锌矿床的成因及成矿模式,认为在泥盆纪本区形成了一套碳、硅、泥质热水沉积,大气降水渗入深地壳发生对流,萃取围岩中成矿物质,并与少量深源岩浆带来的矿质形成含Pb、Zn、Fe等元素的地下热卤水,在构造挤压驱动下,将含矿热卤水运移到浅部白云岩中的层间破碎带,通过渗滤交代白云岩,进行叠加、改造。受温度、压力降低等因素的影响,以络合物为主要形式迁移的Pb、Zn等元素和S结合形成硫化物在有利的岩相—构造部位沉淀、富集成矿。

According to ore deposit geology and the geochemistry research, the genesis and metallogenic model of Panlong lead - zinc mine in Guangxi Wuxuan county are summarized, which put forwards that a set of carbon, the silicon, the argillaceous hot water deposit, formed in the Devonian period home court, have the convection with the atmos- pheric water permeated the deep earths ernst, extract mineralizing element in wall rock, and then become underground heat bittern including Pb, Zn, Fe element. Under the structure extrusion actuation, the heat bittern is migrated to the superficial part dolomite crushed zone, and is carried on the superimposition, the transformation. Under the influence of temperature, the pressure drop low, the sulfide is formed by the Pb, Zn elements, migrated as the complex compound, and S precipitates and concentrates to mineral in the advantageous lithic facies - structure spot.