various raw stones with names on white

amphibolite andesite argillite background basalt calcite carbonatite collage collection dacite description diorite dolomite flint gabbro geological glassbasalt gneiss granite hornfels isolated kimberlite limestone marl mica migmatite mineral name names natural nepheline phyllite pumice quartz quartzite rhyolite rock sample schist skarn slate specimen stone stones syenite travertine tufa turf various white with