Longming Li

滇中黏土型锂矿中锂的赋存状态与富集机制: 基于SWIR光谱矿物填图的解析

Yan ZHOU, MengRu LEI, AiGuo WANG, NaiCen XU et autres

锂作为关键战略性金属,其资源需求日益增长。碳酸盐岩容矿的黏土型锂矿是一种重要的锂资源类型,但对其锂的赋存状态与富集机制认识不清,制约了资源评价与勘探。滇中小石桥锂矿是近年来新发现的该类型矿床,本研究采用短波红外反射光谱(SWIR)技术,结合X射线衍射(XRD)分析,系统研究了该矿床的矿物组合、空间分布及其与锂富集成矿的关系。结果表明,矿化层内存在厘米尺度的矿物相变,高岭石与伊利石丰度呈此消彼长关系。低品位矿石(Li2O≤0.35%)矿物组合以高岭石和伊利石为主,锂可能以离子吸附态赋存于黏土矿物表面或边缘。中高品位矿石(Li2O>0.35%)中则显著富集锂绿泥石和蒙脱石,锂绿泥石丰度与Li2O品位呈显著正相关,是形成高品位矿化的关键矿物,蒙脱石因其强吸附能力也是重要的载锂矿物。研究明确了锂绿泥石和蒙脱石信号的大量出现可作为中高品位矿体的光谱勘查标志。含矿层位的矿物组合和品位在空间上的急剧变化暗示其经历了表生风化沉积富集与后期成岩热液流体的交代改造,富锂流体交代先存黏土矿物(如高岭石、伊利石)形成锂绿泥石是形成高品位矿体的关键机制。

Oblique Arc–Arc Collision During the Earliest Permian in the Northern Beishan Orogenic Collage, NW China: Constraints From Transpressional Deformation and Geochronological Data

Xinrong Liu, Shoufa Lin, Guang Zhu, Lu Dai et autres

Abstract Understanding the deformation history and mechanisms is important for inferring orogenic processes and dynamics. We present new structural and geochronological data from the Pengboshan area in the eastern part of the Heiyingshan–Hanshan Arc (HHA), northern Beishan Orogenic Collage (BOC), to constrain …

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Petrogenesis of the early-middle Paleozoic granites in northern Wuyi, South China: Implications for the geodynamic process of the Wuyi-Yunkai orogen

Longming Li, Xilin Zhao, Kang Xu, Yang Liu

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Identification of ca. 470 Ma continental margin arc volcanism in the Cathaysia Block interior: Constrains on the geodynamic process of the early Paleozoic orogeny in South China

Longming Li, Fan Xiao, Xilin Zhao, Guangfu Xing et autres

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Surface and Deep Structure of the Hanshan–Wuwei Basins in the Lower Yangtze Region: Implications for Mesozoic Tectonic Evolution of the South China Block

Tianxiang Kan, Longming Li, Hongjun Zheng, Jiahao Li et autres

Abstract Indicating the tectonic features of the Hanshan–Wuwei basin can reconstruct the framework of the basins formed in Mesozoic and further understand the Mesozoic tectonic evolution of the South China Block. Studies on surface structure, regional stress field and deep geophysical characteristics …

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Petrogenetic and tectonic implications of mid–Neoproterozoic I–type granites in the Feidong Complex on the northeastern margin of the Yangtze Block, South China

Shouwen Chen, Jiahao Li, Feng Yuan, Longming Li et autres

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Provenance and tectonic settings of the lower Permian siliciclastic rocks in central Inner Mongolia: Implications for the evolution of the Paleo-Asian Ocean

Xinyu Cui, Xianchun Tang, Zhuozhuo Wang, Jinxi Wang et autres

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Modern-style subduction during the late Neoarchean to early Paleoproterozoic? Geochemical evidence from ca. 2.45 Ga arc-type magmatism in the Feidong Complex, northeastern Yangtze Craton, South China

Shouwen Chen, Jiahao Li, Feng Yuan, Simon M. Jowitt et autres

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Geochronology and geochemistry of basalts from the Yingchuan Formation, eastern Jiangnan Orogen: Implications for the Neoproterozoic tectonic evolution of the South China Block

Mo Chen, Lei Wang, Longming Li, Shoufa Lin et autres

The Neoproterozoic magmatism along the Jiangnan Orogen preserves significant information for understanding the tectonic evolution of the South China Block (SCB). We conducted a systematic zircon U–Pb geochronological and whole‐rock geochemical study on the basalts from the Yingchuan Formation in the eastern …

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Geochemistry and geochronology of I–type granites of the Feidong Complex, eastern China: Implications for the Paleoproterozoic tectonic evolution of the Yangtze Craton

Shouwen Chen, Jiahao Li, Feng Yuan, Longming Li et autres

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Mapping hydrothermal alteration of the Au-Cu deposits in the Zhenghe magmatic-hydrothermal mineralization system, SE China, using Short Wavelength Infrared (SWIR) reflectance spectroscopy

Yan Zhou, Shizhong Chen, Longming Li, Fei‐Peng Fan et autres

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Characteristics and genesis of the Fanshan lithocap, Zhejiang Province: Exploration implications from the largest alunite deposit of China

Yan Zhou, Fei‐Peng Fan, Guangfu Xing, Hongliang Zhang et autres

The Fanshan alunite deposit, located in Cangnan County, Zhejiang Province, is the largest alunite deposit in China, which developed a lithocap with an extensive advanced argillic alteration. Surface alteration mapping, through field geology and shortwave infrared (SWIR) spectroscopy analyses, has defined three …

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