Diffuse and specular reflectanceFTIRanalysis both fossil resin (resinite) and coal has been carried out to study surface oxidation reactions which occur during the selective flotation of fossil resin from coal by ozone conditioning. It was found from theFTIRspectra that ozonation of both fossil resin and coal causes an increase in the peak intensity associated with stretching vibrational frequencies of certain oxygen functional groups such as hydroxyls (3400 cm−1’) and carbonyls (1700 cm−1).