Granite, formed by igneous rock, is a steel-hard lens stone, originally formed by feldspar and quartz and mixed with one or more black minerals, which are arranged in a flat structure.
Granite is mainly composed of quartz, feldspar and mica. The content of feldspar is 40%-60%, the quartz content is 20%-40%, and its color depends on the type and quantity of the ingredient. Granite is the whole crystal structure of rock, high-quality granite grain fine and uniform, structure close, quartz content, feldspar luster Bright.
Granite is a high silica content, belonging to acidic rock. Some granite contains traces of radioactive elements, such granite should be avoided for indoor use. The granite structure is dense, the texture is hard, acid and alkali, weather resistance is good, can be used outdoors for a long time.