15. ALIREZA VALIAN
Information acquired: 2025
ALIREZA VALIAN is an academic who published a paper in 2020 entitled Characterization of Rare Earth Elements in the Illinois Basin Coals. ALIREZA VALIAN published this work as part of a team: Valian, Alireza. Here is a description of this work: The purpose of this study is to characterize the distribution and occurrence of rare earth elements (REEs) in the coal and coal-related material from the Illinois Basin. For characterizing the distribution of REEs, 17 core samples were investigated from various parts in the basin. Also, several individual samples from coal preparation plants and isolated geological occurrences were included in the study. In result, the average REE concentrations were calculated on a bed-to-bed basis, although the distribution of REEs in the coal beds was found laterally and vertically heterogeneous. A number of trends were found that describe the variations. Most importantly, it was found that where samples of the Springfield and Herrin coal beds are away from syndepositional paleochannels, they have a higher ratio of heavy to light REEs; whereas nearer to contemporaneous ch.