ArticleACS omega2026
Gallium Abundance and Isotope Geochemistry in Coal and Mudstone from the Huainan-Huaibei Coalfield: Implications for Geological Processes and Resource Utilization.
Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study conducted a systematic analysis of the abundance and isotopic geochemical characteristics of gallium (Ga) in coal and mudstone from the Huaibei region, aiming to reveal the distribution patterns, controlling factors, and geological significance of Ga in this area. Ten representative samples were selected from the Huainan-Huaibei Coalfield, and their Ga contents and isotopic compositions were accurately determined using advanced analytical techniques, including X-ray diffraction (XRD), inductively coupled plasma mass spectrometer (ICP-MS), and multicollector inductively coupled plasma mass spectrometer (MC-ICP-MS). The study revealed that the average Ga content in coal samples from the Huainan-Huaibei region was 9.4 ppm, while in mudstone samples, it was 30.2 ppm, indicating a relative enrichment of Ga in mudstone. The abundance differences stem from variations in mineral composition between coal and mudstone. Organic matter in coal predominantly limits Ga enrichment, whereas clay minerals in mudstone can adsorb and fix Ga. Significant differences were observed in the Ga isotope ratios (δ
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