The Investigation And Assessment Of The Pyrite Deposits Along The Yangtze River In Anhui

On the base of collecting and researching of the geological background, the metallogenic environment and the metallogenic characteristics of the the pyrite deposits along the Yangtze River in Anhui, we divide the pyrite deposits into four types,including the volcanic gas-liquid-type, the contact metasomatic type, the hydrothermal type and the reworked sedimentary type. Then we chose the typical deposit of each type of the pyrite deposits, and then we analysis the geological features of each typical deposits, summary the relationships between the stratum,the structure,the magmatic rocks and the pyrite deposits.Then ,first we establish the prospecting model, extract the information of the stratum,the structure, the magmatic rocks, the gravity anomaly,the aeromagnetic anomaly and the geochemical anomaly of the Fe, then establish the information layers.Second we count the relationships between the information layers and the layer of the pyrite deposits,then determine which are the forecasting layers.At last ,we count the weights of evry forecasting layers with the analysis method, then we forecast the prospect area of each type of the pyrite deposits, analyse and calssify the proapect area.