Multi-stage scheelite geochemistry constrains the genesis of tungsten mineralization at the Ligongling breccia pipe in the Yangchuling porphyry system, South China - Jia-Xiang Dong; Suo-Fei Xiong; Shao-Yong Jiang; Xiao-Fei Pan; Zeng-Qian Hou; Yan-Shen Yang; Yong-Peng Ouyang (Journal of Geochemical Exploration, 2026)