哈萨克斯坦萨特巴耶夫大学Maxat Kembayev团队研究了匈牙利西南部Mecsek铀矿床分散有机质微量元素地球化学。相关论文于2025年6月24日发表在《地球化学学报》杂志上。

研究组对主要存在于镜质组和固体沥青中的分散有机物（DOM）的地球化学成分，特别是金，提供了分析见解。该DOM与位于匈牙利西南部Mecsek西部晚二叠世Kágósz 337砂岩组内的铀矿石密切相关。DOM在矿床的富铀地层中的存在值得注意。然而，其形态特征、微量元素组成及其与矿石矿物的关系等关键方面在很大程度上仍未得到探索。

研究组采用了一系列技术，包括光学显微镜分析、显微组分和镜质组反射率分析；以及使用激光烧蚀电感耦合等离子体质谱（LA-ICP-MS）进行微量元素测量。分析数据表明，DOM有六种不同的形态：原生镜质体、次生（再加工）镜质体、惰质组、固体沥青、焦沥青和石墨。 DOM的镜质体反射率范围为1.7%至2.9%。DOM的平均Au含量为0.67ppm，Ag含量为7.7ppm，U含量为58.8ppm，Th含量为22ppm，As含量为256ppm，Cu含量为91ppm，Ni含量为61ppm，P含量为259ppm。

研究组得出结论，DOM显示出金和铀含量升高，这可能是由于它在还原条件下沉积造成的。这些发现支持DOM的微量元素组成作为矿化形成条件的指标的潜在用途。具体而言，该数据表明，在DOM中使用LA-ICP-MS分析微量元素，可以作为西部Mecsek矿床Kágósz 337s砂岩组中有价值的勘探工具。

附：英文原文

Title: Trace element geochemistry of dispersed organic matter in Western Mecsek uranium ore deposit, Southern Hungary

Author: Junussov, Medet, Kembayev, Maxat, Mukhamediyarova, Nessipzhan, Rustembekov, Murat Maratuly, Abirov, Rustem

Issue&Volume: 2025-06-24

Abstract: This paper provides analytical insights into the geochemical composition, particularly focusing on gold, of dispersed organic matter (DOM) mainly present within vitrinite and solid bitumen. This DOM is closely associated with uranium ores located within the Late Permian Kvágószls Sandstone Formation in Western Mecsek, South-West Hungary. The presence of DOM is notable in the uranium-rich formation of the deposit. However, crucial aspects such as its morphological characteristics, trace element composition, and its relationship with ore minerals are still largely unexplored. The study utilizes a range of techniques, including optical microscopic analysis, maceral and vitrinite reflectance analyses; and trace element measurement using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The analytical data show that DOM has six different morphologies: primary vitrinite, secondary (reworked) vitrinite, inertinite, solid bitumen, pyrobitumen, and graphite. Vitrinite reflectance of DOM ranges from 1.7% to 2.9%. The DOM has average content of Au 0.67 ppm, Ag 7.7 ppm, U 58.8 ppm and Th 22 ppm, As 256 ppm, Cu 91 ppm, Ni 61 ppm, and P 259 ppm. We conclude that DOM exhibits elevated levels of gold and uranium, likely attributed to its deposition under reducing conditions. These findings support the potential use of DOM's trace element composition as an indicator of the formation conditions of ore mineralization. Specifically, our data suggest that using LA-ICP-MS to analyze trace elements, within DOM could serve as a valuable exploration tool within the Kvágószls Sandstone Formation in the Western Mecsek deposit.

DOI: 10.1007/s11631-025-00801-x

Source: https://link.springer.com/article/10.1007/s11631-025-00801-x