Multianalytical approaches to the characterisation of minerals associated with coals and the diagnosis of their potential risk by using combined instrumental microspectroscopic techniques and thermodynamic speciation

► A multianalytical methodology is an approach to search for complex mineralogical composition. ► Thermodynamic speciation confirms the stability of minerals and predicts possible environmental risks. ► Coals from five continents were selected for analysis. ► The analysis showed the main minerals found associated to coal.