In soils constructed after coal mining, superficial contamination with pyrite coal residues causes acidification, accelerates the mineral weathering, increases Al and Mn contents, and base leaching. The present work evaluated chemical characteristics, clay content and mineralogy, and the spatial variability for some of these characteristics in three constructed soil areas after surface coal mining in Lauro Müller, Santa Catarina State, Brazil. The selected areas present differences in their topographic soil construction. The first area, Juliana Mine (MJ), was constructed in […]