Influence of Mineral Composition in Natural Granite Rocks on Microhardness

Granites are becoming increasingly popular and, as a result, their areas of use expanding. In addition to colour and particle size, the surface roughness machined material is an important aspect application. order create suitable roughness, type rocks located on surface, elemental composition microhardness minerals important, because knowledge these characteristics can be used determine machining parameters. Microhardness affected by atomic percentage values Si, Al Na. addition, for some minerals, correlation also established between Na components.