| Gold deposit of Jianchaling has the close relation with ultrabasic rock in the space and time and the origin, still is the first example in the Qinling orogenic zone, in our country also is the rare golden ore deposit type, its unique geological background and the mineralization characteristic has the important research significance. This work main basis ore deposit study research mentality, gold deposit of Jianchaling mineralization geology, in the geochemistry characteristic foundation in the key analysis, to gold deposit of Jianchaling north and south ore belt to carry on the system the research, discusses its mineralization matter origin and its the ore deposit origin. Through deposit geology and geochemistry system analysis of north and sourth ore belt of gold deposit of Jianchaling, obtains following new understanding and the progress:1.The research believe that the main mineralization matter of gold deposit of Jianchaling originate from the ultrabasic rock, but south ore belt as a result of structure and basis rock series the influence, the mineralization matter besides mainly comes from the ultrabasic rock, the part comes from the basis volcanic rock and the later period low temperature hydrothermal, the ore deposit origin all for the center low temperature - slight structure alteration crag gold ore.2 Jianchaling south ore belt mineralization solution along with mineralization carrying on, the mineralization system from by H2O-CO2-KCl primarily hydrothermal system to by H2O-CO2-NaCl primarily hydrothermal system transformation. Which is similar with the northern ore belt evolved tendency, from the initial period oxidation, the neutral solution to the later period return to original state, the low-acid solution change, is advantageous in the golden precipitation concentrates. In the overall gold deposit of Jianchaling mineralization solution is the low-acid, the mineralization environment for weakly restores the environment.3.Although the gold ore mineralization and the ultrabasic rock time, the spatial relations are extremely close, but compares with the melt to the nickel gold polymetallic ore deposit, it altogether, the associated mineral combination has the big... |
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