The paper presents the results of research on rare earth elements (REY) and selected radionuclides in barren rocks deposited on a heap at a mine belonging to the Polish Mining Group (the largest producer of hard coal in EU countries). The maximum concentration of REE_s determined in silstones was 261.6 mg/kg and in sandstones 221.2 mg/kg. The average uranium and thorium content in silstones was 6.8 mg/kg and 11.6 mg/kg, respectively. On the other hand, the samples of burnt coal shales contain on average 3.5 mg/kg of uranium and 9.7 mg/kg of thorium. In all coal waste samples, the REE values are higher than in hard coal (15.7 mg/kg). Carriers of REY, uranium, and thorium in coal waste are detritic minerals: monazite and xenotime, which are part of the grain skeleton of barren rocks. Coal waste samples are characterized by a variable distribution of REY concentrations as well as a variable content of radionuclides. The ²²⁶Ra, ²²⁸Ra, and ⁴⁰K measurements in the investigated samples were performed using the gamma spectrometry technique. The concentrations of the analyzed isotopes differed depending on the mineralogical composition of the investigated samples. The present study results may be important in determining the possibility of utilization of wastes of barren rocks stored in the mine heap and in assessing environmental and radiological hazards.

中文翻译：

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波兰矿业集团矿山堆废物中某些放射性核素和稀土元素的发生

本文介绍了对波兰矿业集团（欧盟国家最大的硬煤生产商）的矿山中堆积在贫瘠岩石中的稀土元素（REY）和某些放射性核素的研究结果。REE_的最大浓度硅岩中的含量为261.6 mg / kg，砂岩中的含量为221.2 mg / kg。硅岩中铀和th的平均含量分别为6.8 mg / kg和11.6 mg / kg。另一方面，燃烧的煤页岩样品平均含有3.5 mg / kg的铀和9.7 mg / kg的of。在所有煤炭废物样品中，REE值均高于硬煤（15.7 mg / kg）。煤waste石中REY，铀和or的载体是有害矿物：独居石和Xenotime，它们是贫瘠岩石的颗粒骨架的一部分。煤炭废物样品的特征在于REY浓度的可变分布以及放射性核素的可变含量。在²²⁶镭，²²⁸ RA和⁴⁰使用伽马光谱技术对研究样品中的K进行测量。所分析同位素的浓度根据所研究样品的矿物组成而有所不同。本研究结果对于确定利用矿山堆中的贫瘠岩石废物的可能性以及评估环境和放射性危害可能是重要的。