Prospecting potential of medium-fine-grained rock-type lithium resources in the Xianghualing orefield, Hunan Province, China
SONG Zhi-Fang1(), YANG Qi-Zhi1,2, ZHU Zhen-Zhen1, CAO Neng-Wen1
1. Mineral Resources Investigation Institute of Hunan Province, Changsha 410129, China 2. State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China
This study aims to explore the distribution characteristics and occurrence patterns of lithium in medium-fine-grained rocks and its paragenetic or associated relationship with minerals such as tungsten, tin, niobium, tantalum, beryllium, and rubidium. Hence, it analyzed the distribution characteristics and diagenetic and metallogenic processes of nonferrous-rare metals in the Xianghualing orefield. With the exposed granitic rock masses as the center, this study divided three ore-forming sections of rare metal lithium, i.e., the Laiziling-Nanjichong, Jianfengling-Xianghuapu, and Tongtianmiao-Yaoshanli ore-forming sections. Moreover, lithium-rich mineralized bodies were discovered in the medium-fine-grained rocks of the former two ore-forming sections. Lithium converges and accumulates in the interior and top of medium-fine-grained granitic rock masses, at the automorphism and alteration positions of high-emplacement apophyses and vein fronts and edges, or in the areas enclosed by silicon-rich quartz veins at the contact zone with silicon-rich surrounding rocks. Dividing these mineralization and alteration sections serves as a crucial approach for exploring medium-fine-grained rock type lithium ore bodies in the Xianghualing orefield.
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