The properties of different sulphides (chalcopyrite-CuFeS2, pyrite-FeS2, galena-PbS, tetrahedrite-Cu12Sb4S13, stibnite-Sb2S3) which were ground in a planetary mill in polar alcohols containing : 1-5 carbon atoms (methanol, ethanol, n-butanol, i-butanol, n-propanol, i-propanol and i-amyl alcohol) were studied. Tt was found that the maximal increase of specific surface area can be achieved by milling in organic liquids with high mu/V values (mu, dipole moment; V, molecular volume). A high degree of sulphide structure disordering can be achieved if organic liquids with a higher molecular density are employed. The results of the increase in specific surface and structured disordering were related to the Vicker's hardness of the investigated sulphides.