| The south slope of FuNiu mountain in the west of HeNan is a district where gold deposits concentrate distinctly. The gold deposits, gold spots , mineralized spots and abnormity of gold element are so many that they composite a gold belt. As the degree of study at this place is low, especially the study of law is lack and the forecast means fall behind. So there has been no big breakthrough up to now in gold exploration.This study is focus on the belt region from XiaGuan to ErLangPing. I systemically study the background of geology, features of gold deposits and geochemistry , analyzing the genesis of gold deposits, building up the mode of genesis , summarizing the law of enrichment . At last, I optimize the target areas of exploration by means of math geology.The faultages of ZhuXia and WaQiao are big deep faultages that control the gold deposits distinctly in this area. The main stratums contain gold element are YanLingGou team of QinLing group and HuoShengMiao team of ErLangPing group in sub-Paleozoic, the lithologise that are the best related with gold mineralization are graphite marble and dolomite marble in YanLingGou team and splite marble in HuoShenMiao team. On the other hand, the granite is related with gold deposits in time , space and genesis . Gold deposits are mainly the type of quart vein and etach rock, there are some type of porphyry and scraping rock containing charcoal. In the study of geochemistry , I study the microelements in class, the element of Au, Ag are strong enrichment in the stratum of XiaoZhai, this stratum is one of the mine resources . MuHuDing granodiorite is one of the mine resources, what's more, it supplies dynamical heat. From the study of sulfur isotope, I know that it is muti-mineralize feature , and mainly comes from magma sulfur . From the study of lead isotope, we know that the lava of ErLangPing is ocean lava-spilite keratophyre , it is the main origin of lead in time evolvement sequence and genesis. From the study of lanthanon , we know that quart-vein is the single production of hydro mineralization . etch rock and mineralized rock are the mix outcome of hydro mineralization and wall rock materials. Ce, Eu are no distinct thundering change. It suggests that hydrothermal liquid mineralization is local and short-lived geological event. From the study of gas-liquid enclosure, we know that the crack temperature is between 152 and 335 degree, the pressure is between 180 and 291.15 Pa.that is to say, the temperature of mineralization belongs to middle degree, the deep is about 1000 kilometers. From the study of hydrogen-oxygen isotope inenclosure liquid, some water conies from magma, others come from atmosphere precipitation.The genesis of gold deposits is complex in this district , the type of quart-vein plus etch rock belongs to hydro thermally superimposed complex mineralization. The type of porphyry and scraping rock containing charcoal belongs to volcano sediment - alteration hydro thermally gold deposits, the formation of gold deposits is controlled by several factors. The stratums containing mine , tectonic- hydro thermally process, magma activity , alteration react to district mineralization in degrees. The belt of granite facies , the inside and outside contact belt of rock body, the joining belt of tectonic- hydro thermally superimposed, the stratum belt of unconformity contact are the main enrichment belt. On the basis of the mineralization features, mineralization controlling factors and integrated signs of looking for mine, I dope four target areas that are XaGua, LiGou-Wan dyke, YouHuLu dyke -YinDong dyke , DaShi stove by way of geology and math-geology ways, which will supply warrant for the following work deploy. |
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