Granite, known as acidic crystalline plutonic rocks is igneous rock. It is the most widely distributed in igneous rocks of a rock, and composed of feldspar, quartz and mica, of which silica is the main part, accounting for 65% -75%.
The so-called igneous rock that is underground magma or volcanic eruption of lava rocks made of condensed crystal. Igneous rocks in the content of silica, feldspar determine the nature and content of the nature of the stone. When the silica content of more than 65% belong to acid rock, this rock Chiang Kai-shek feldspar, plagioclase, quartz crystals and other basic mineral formation when the material was shaped structure, called granite.
Granite is suitable for threshold, cabinet’s countertops and outdoors ground. One cabinet table is best to use dark granite. Marble is the crustal rocks through the crust in the Central Plains and some role in the formation of high temperature and pressure of metamorphic rock. Internal forces of the earth's crust to promote the role of the original rock types of qualitative change, that is, the original rock structure, structure and mineral composition change. A new rock that is after the formation of a new qualitative change is called metamorphic rock.
