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早在六十年代,湘东石峡矿区在评价汞、砷矿床的同时,发现矿石含金,且富集成工业矿体.长期以来,由于金的赋存状态不清,金的回收问题一直未得解决.近年,我们针对矿石中金“不可见”的特点,进行了系统的显微镜鉴定、粒度分析、电子显微镜、电子探针等微区分析,初步查明该金矿是一个微细浸染型金矿.此类矿床在我国系首次发现.本文着重讨论该金矿金的赋存状态和回收预测.金矿床特征简述矿区位于湘东华夏褶断带.区内构造以北北东向紧密的背向斜及走向断层为主.矿区次一级褶皱及断裂构造发育.区内出露前震旦系板溪群、泥盆系、石炭系、第四系等地层.矿体主要产在泥盆系上统佘田桥组灰
As early as the 1960s, while evaluating the mercury and arsenic deposits in the Shihshi gorge in eastern Hunan Province, it was found that the ore was rich in gold and enriched in industrial ore bodies. For a long time, the problem of gold recovery had not been solved due to the unclear gold status In recent years, we have carried out systematic microscopic identification, particle size analysis, electron microscopy, electron probe micro-area analysis for the gold “invisible ” features of the ore, initially identified the gold mine is a fine dip Type gold deposit.These deposits were first discovered in our country.This paper focuses on the occurrence status and recovery prediction of the gold deposit.The characteristics of the gold deposits are summarized in the Huaxia fold belt in eastern Hunan.The structure of the area is north- Tight back-syncline and strike-to-fault faults.The second order fold and fault structure of the mining area developed.The former Sinian Banxi Group, Devonian, Carboniferous and Quaternary strata, Devonian system Shetian Bridge ash group