Calorific properties of xylite, litotype of lignite, are well researched, because it is used mainly as a fuel. If we knew the anatomical structure, physical and mechanical properties better, it would allow us to expand the use of xylite to some other areas. Using microscopic characterization drying parameters were defined and verified in laboratory conditions. Density of xylite (ro=1229 kg/m3) is comparable with highest densities of hardwoods. As a result xylite has high shrinking rate, differential shrinkage, shrinking and sorption coefficient. Drying curve has very short linear part and great diffusion resistance in 2nd and 3rd phase of drying. Poor cohesion of xylite tissues, caused by mineral inserts and deorientation of tissues, and great drying tensions are responsible for low efficiency of drying process.