The Metallogenic Study Of The Relationship Between Ductile Shear Deformation And Superposition In Huangshan-jing' Erquan Copper-nickel Deposits

The Huangshan area which is located in Huangshan-JingËŠerquan ductile shear zone belongs to southern part of the Central Asian orogenic belt, is one of the main mineralization area of the Cu-Ni sulfide deposit distributed extensively. In this paper, case study on the Huangshan and Huangshangdong copper-nickel sulfide deposits in the zone, it is discussed on that the ductile shearing metallogenic make superposition and re-enrichment for the deposits. The result is showed in which the Huangshandong pluton and the copper-nickel mine was significantly affected by ductile shearing,while the Huangshan pluton and the Huangshan Cu-Ni deposit was weakly influenced by ductile shearing.This paper collects and collates the date and documents of predecessors. With carefully observation and the electronic probe study of the samples of rocks and minerals from the mining area, the researcher conducted a systematic study of mineralogical petrological and oregeological characteristics of Huangshan and Huangshandong copper-nickel sulphide deposits. Based on the study and observation of the ore bodys, ore types structure and mineral composition of Huangshan and Huangshandong deposits, especially the mineralogical characteristics and the association of various metal minerals. The main results are drawed as follows:â‘ Ore-forming process of Huangshandong and Huangshan nickel-copper deposits includes four periods: magma period, hydrothermal stage, shear period and weathering period.â‘¡Ductile shearing and magma emplacement and mineralization of the Huangshandong and Huangshan complex-body are consistent in time.â‘¢It is indicate that essential and trace elements are activated and reallocated with shear and hydrothermal mineralization.â‘£Superposition of ductile shearing mineralization and magma and hydrothermal mineralization facilitate the re-enrichment of copper-nickel in the Huangshandong and Huangshan Cu-Ni deposits.