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.
Axial primary halo characterization and deep orebody prediction in the Ashele copper-zinc deposit, Xinjiang, NW China / Zheng, C.; Luo, X.; Wen, M.; Ebrahimi, P.; Liu, P.; Liu, G.; Li, H.; Wei, C.; Chen, Z.; Albanese, S.. - In: JOURNAL OF GEOCHEMICAL EXPLORATION. - ISSN 0375-6742. - 213:(2020), p. 106509. [10.1016/j.gexplo.2020.106509]
Axial primary halo characterization and deep orebody prediction in the Ashele copper-zinc deposit, Xinjiang, NW China
Ebrahimi P.Methodology
;Albanese S.Ultimo
Supervision
2020
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
