The Zhuxi copper-tungsten (Cu-W) polymetallic deposit located in the Taqian-Fuchun basin, northeastern Jiangxi province of China, is the largest W-deposit in the world. The audio-frequency magnetotelluric (AMT) has been a common tool used in resolving ore deposit-related problems, based on the distinct electrical resistivities between ore deposits and surrounding rocks. To locate the deeper structure relevant to ore-formation and extend the prospecting range, the AMT data of 72 sites from an array consisting of 116 stations were inverted, yielding the 3-D electrical resistivity model in Taqian-Zhuxi area. In addition to the conductor in Zhuxi deposit, there are three large-scale electrical conductors presenting along the NE-striking Taqian-Fuchun fault. Integrating of previous geological and drilling data, the conductors could be ascribed to the skarn mineralization in the zone between the granitic intrusion and the Paleozoic carbonates, for which the NE-striking fault supplied the pathway for magma and fluids migration.
Note: This paper was accepted into the Technical Program but was not presented at IMAGE 2021 in Denver, Colorado.
