昆明理工大学韩润生团队近日实现了从弱低构造地球化学异常中提取深部矿化信息——以云南省东北部茅坪富锗铅锌矿床为例。相关论文于2025年5月19日发表在《地球化学学报》杂志上。

构造地球化学分析是深部勘探和预测的关键技术方法之一，但提取弱矿化和低矿化程度的信息仍然是一个重大挑战。研究组以滇东北茅坪超大型富锗铅锌矿床为例，系统分析了成矿元素组合及其异常分布特征，提取了深部低、弱异常信息，阐明了成矿元素异常的空间分布和流体运移模式，建立了构造地球化学深部异常评价标准和找矿模型，从而为矿床深部找矿提出了方向。研究组表明，F1因子（Cd-Cu-Ge-Zn-Sb-In-Pb-Sr（-）-As-Hg）异常的矿化元素组合代表了近矿晕；F2因子（Ni-Co-Cr-Rb-Ga）异常的元素组合代表了尾晕；F3因子（Rb-Mo-Tl-As）异常的元素组合代表了前晕；F4因子（Ba-Ga）异常的元素组合代表重晶石蚀变异常。 

锌和铅等元素在铅锌矿体附近表现出明显的异常。在研究区，洛泽河东部地区的垂直异常表明，成矿流体从深处的东南向较浅的西北迁移，而在西部地区，成矿流体则从深处的西南向较浅水平的东北迁移。因此，确定了河流东部和西部不同矿体的横向延伸。在此基础上，建立了矿床构造地球化学深部异常评价标准，并提出了深部找矿方向。该研究为类似铅锌矿床的深部勘探和勘探工程规划提供了科学价值和现实意义。

附：英文原文

Title: Extraction of deep mineralization information from weak and low tectono-geochemical anomalies: A case study of the Maoping germanium-rich lead–zinc deposit in northeastern Yunnan Province, China

Author: Yang, Yixuan, Zhou, Gaoming, Han, Runsheng, Gong, Hongsheng, Wu, Jianbiao, Zhang, Yan, Mi, Yaya

Issue&Volume: 2025-05-19

Abstract: Tectono-geochemical analysis is one of the key technical methods for deep prospecting and prediction, but the extraction of information on weak and low degrees of mineralization remains a significant challenge. This study takes the Maoping super-large germanium-rich lead–zinc deposit in northeastern Yunnan as an example, systematically analyzes the mineralization element assemblages and their anomaly distribution characteristics, extracts information on low and weak anomalies at depth, clarifies the spatial distribution of ore-forming element anomalies and fluid migration patterns, and establishes tectono-geochemical deep anomaly evaluation criteria and prospecting models, thereby proposing directions for deep prospecting in the deposit. This research shows that the mineralization element assemblage of the F1 factor (Cd-Cu-Ge-Zn-Sb-In-Pb-Sr(-)-As-Hg) anomalies represents near-ore halos; the element assemblage of the F2 factor (Ni-Co-Cr-Rb-Ga) anomalies represents tail halos; the element assemblage of the F3 factor (Rb-Mo-Tl-As) anomalies represents front halos; and the element assemblage of the F4 factor (Ba-Ga) anomalies represents barite alteration anomalies. Elements such as Zn and Pb exhibit significant anomalies near the lead–zinc ore bodies. In the study area, vertical anomalies in the eastern region of the Luoze River indicate that ore-forming fluids migrated from the SE at depth to the NW at shallower levels, whereas in the western region, ore-forming fluids migrated from the SW at depth to the NE at shallower levels. Thus, the lateral extensions of different ore bodies in the eastern and western regions of the river have been determined. On this basis, tectono-geochemical deep anomaly evaluation criteria for the deposit are established, and directions for deep prospecting are proposed. This study provides scientific value and practical significance for deep prospecting and exploration engineering planning for similar lead–zinc deposits.

DOI: 10.1007/s11631-025-00776-9

Source: https://link.springer.com/article/10.1007/s11631-025-00776-9