Application Research On Geochemical Prospecting Method Of Paishanlou Gold Deposit In Fuxin

Paishanlou gold deposit lies to Fu Xin-Jinzhou in Liaoxi area, So far this mine is one of the biggest gold mines hosted in mylonite and controlled by the ductile shear belt.The deposit hosts in Archean altered mylonites fracture zone, which seems layered and enticular, There are two main ore types, altered biotite plagioclase mylonites and altered felsic mylonites, altered strong but low grade. At present the gold mine has stepped into the crisis mine rank after years of transition mining, So there is a urgent need for developping in resource exploration, Thus, the mineral reserves can be increased again and the service life of mine can be extended.The thesis does research on ore-prospecting prediction for Paishanlou gold deposit using two ore prospecting methods respectively, which are primary halo-structural superimposed halo and deep penetration exploration geochemistry. We get 120 rock samples collected from 11 extent between 50-330 elevation in primary halo research, and do the comprehensive research of 12 kinds of microelement earth target, so we can ensure the gold mine primary halo axial sequence, geochemistry parameters regular pattern and structural superimposed halo features. Therefore, we can start the deep prospecting work,then confirm the orientation of target.Researching on deep penetration exploration geochemistry is operated by 3 geochemistry options:organic hydrocarbon gas survey, adsorption phase state mercury survey and radon survey. Hydrocarbon and mercury research are disposed four research profiles and 135 geochemistry samples are collected, did the measurement and analysis for datum of 7 organic hydrocarbon gas components or mercury in the samples. Two anomaly characteristics of hydrocarbon and mercury in the profile shows profiles abnormal of methane, ethane, propylene and morphology mercury have good spacing corresponding with orebody. This reflects profile of methane and ethane above orebody shows abnormal; Propylene, butane and adsorption morphology are multi-peak, which is verified applying hydrocarbon survey and mercury survey to prospect mine is reasonable and practical. By the reseach results, we applied hydrocarbon survey and mercury survey on the east and west mining area, In order to increase the accuracy of the prediction results,We did radon survey on eastern profile of the mining area. Finally, We located two mineralization favorable target areas in east or west mining area by comprehensively analysising profiles abnormal of hydrocarbon, mercury, propylene and radon.