Igneous rock (derived from the Latin word ignis meaning fire) is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magmaor lava. Igneous rock may form with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.
Marble
Marble is a metamorphic rocks with a crystalline limestone structure formed by the combined action of high pressures and very high temperatures. Marble may be pure (metamorphic origin) or re-composed (sedimentary origin). Marble is not particularly hard (3-4 on the Mohs scale) and is characterized by some degree of variability in the granulometry of components and color shades. The color
