Trace element geochemistry of dispersed organic matter in Western Mecsek uranium ore deposit, Southern Hungary
Junussov M. Kembayev M. Mukhamediyarova N. Rustembekov M.M. Abirov R.
2025Science Press
Acta Geochimica
2025
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 Kővágószőlős 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 DOMs 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 Kővágószőlős Sandstone Formation in the Western Mecsek deposit.
Dispersed organic matter , Gold , Kővágószőlős sandstone formation , Uranium , Western Mecsek
Text of the article Перейти на текст статьи
School of Mining and Geosciences, Nazarbayev University, Astana, 010000, Kazakhstan
Institute of Geology and Oil-Gas Business, Satbayev University, Almaty, 050013, Kazakhstan
KazAtomprom Joint Venture “Inkai”, Turkestan, 161000, Kazakhstan
Quantum Planetoid Resources TOO, Almaty, 050000, Kazakhstan
School of Mining and Geosciences
Institute of Geology and Oil-Gas Business
KazAtomprom Joint Venture “Inkai”
Quantum Planetoid Resources TOO
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026