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Axial primary halo characterization and deep orebody prediction in the Ashele copper-zinc deposit, Xinjiang, NW China
Journal of Geochemical Exploration ( IF 3.9 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.gexplo.2020.106509 Chaojie Zheng , Xianrong Luo , Meilan Wen , Pooria Ebrahimi , Panfeng Liu , Gang Liu , Heping Li , Chaocheng Wei , Zesu Chen , Stefano Albanese
Journal of Geochemical Exploration ( IF 3.9 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.gexplo.2020.106509 Chaojie Zheng , Xianrong Luo , Meilan Wen , Pooria Ebrahimi , Panfeng Liu , Gang Liu , Heping Li , Chaocheng Wei , Zesu Chen , Stefano Albanese
Abstract In this investigation, a total of 404 rock and ore samples were systematically collected from 5 boreholes in two exploration lines of the Ashele copper-zinc polymetallic mining area in Xinjiang. Twelve elements were analyzed to evaluate the potential for deep and periphery prospecting. Subsequently, the concentration zoning and the vertical element zoning sequence of the primary halo were graphically generated. Based on both previous studies and the result of the actual analysis, it was determined that, for Ashele mining area, As, Sb, Ba, and Au are supra-ore halo elements, Pb, Zn, Cu, and Ag (Au) are near-ore halo elements, and Bi, Co, Mo, and Sn are sub-ore halo elements. Factor analysis revealed exhalative-sedimentation mineralization as the first metallogenic stage followed by metamorphic-deformation and hydrothermal superimposed mineralization as the second one. The superposition area of the sub-ore halo and the supra-ore halo and multivariate prospecting information (indicated by the primary halo zoning index, the geochemical parameter, the trilinear diagram of the primary halo, and the factor score map) suggest that there may be blind orebodies in the deep parts of four boreholes. Some geochemical parameters revealed the multiple-periodic and multiple staged overlapping the signatures of the mineralization.
更新日期：2020-06-01
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