Abstract: A method for producing high density metal-containing lubricants and for comminuting metal into fine spherical particles is provided by heating a carrier fluid such as a lubricant, for example, and a metal until the metal becomes liquid, admixing the two components to form a homogeneous dispersion of metal globules in the carrier fluid, and then cooling the mixture. When a lubricant carrier fluid is used, the resulting high-density lubricant contains discrete, spherical metallic particles dispersed therein and higher density is achieved without any consequent loss of lubricating properties.