Spatial and Temporal Distributions and the Geological Setting of the W-Sn-Mo-Nb-Ta Deposits at the Northeast Guangxi, Southe China

Northeastern Guangxi is tectonically located in the transition zone between the Jiangnan orogenic belt and the South China fold belt, and has a unique tectonic position. Using detailed analysis of a series of typical deposits and chronological data of granite related, along with deposit types and ore-forming elements, this study divided the deposits in this area into six metallogenic systems. (1) W-Mo deposits related to the Silurian granite; (2) Pb-Zn deposits related to the late Triassic granite; (3) W-Mo deposits and Sn-Nb-Ta deposits associated with the Triassic granite; (4) W-Sn deposits related to the Middle-Late Jurassic granite; (5) W-Sn deposits associated with the Cretaceous granite; (6) Uranium deposit related to the granite. The formation of these deposits is closely related to tectonic-magmatic evolution in different periods and formed mainly at syn-collision compressional setting and/or post-collision extensional setting.