Data-constrained modelling of an anthracite coal physical structure with multi-spectrum synchrotron X-ray CT

► A DCM model with multi-spectrum synchrotron X-ray CT is used to characterise an anthracite coal physical structure. ► This model enables detection of mixed composition distributions at length scales smaller than X-ray CT resolution. ► The 3D physical structure of the sample is obtained and the partial volume effect is addressed with DCM. ► Voids and some minerals at length scales smaller than X-ray CT resolution have been detected and displayed.