Rock-and ore-controlling structure in the Zhuxi ore concentration area in the northeastern Jiangxi Province

Zhuxi is a newly discovered W-Cu ore concentration area in the Qinzhou-Hangzhou metallogenic belt, northeastern Jiangxi Province. It is situated in the lifting area of the thrust nappe structure in eastern Pingxiang-Leping depression, Qinzhou-Hangzhou orogenic juncture belt. Due to the Yanshanian thrust nappe tectonic events, the Zhuxi ore concentration area is dominated by Neoproterozoic metamorphic basement and Upper Paleozoic -Mesozoic tectonic slices. The ore deposits in this region are controlled by thrust nappe deep faults, hosted in carbonatite tectonic slices, and transformed by superficial hedge structures. The early Yanshanian metallogenesis can be subdivided into two groups:(1) Mo -Cu metallogenic system related to the I -type (porphyritic) granodiorite; (2) W-Cu metallogenic system related to the S-type granite. The Zhuxi area is characterized by two orefields (Taqian-Zhuxi and Zhangjiawu-Yuexing) and two magmatic steps (Maojiayuan-Zhangjiawu and Zhuxi-Taqian). The discovery of the Zhuxi giant W-Cu deposit opens a window for the deep mineral exploration in the geotectogene of the Qinzhou-Hangzhou metallogenic belt.