a big granodiorite rock on white background.

abundant andesite ashes background big black building carbon cement coal coarsegrained coarser color concrete construction crystal dark ejecta extrusive family finegrained formed fossil fuel geology granite granodiorite gray igneous important industry intrusive isolated light limestone lithification macro make material medium mica mine mineral mining mix mortar name natural nature object ore outburst piece rock rocks rough sample sedimentary stone tuff tuffstone used usually volcanic white