What is the main chemical composition of granite
A deep into an acidic igneous rock. Commonly known as granite. More than 70% of the silica content. Lighter color, to gray, meat red are more common. Mainly by the quartz, feldspar and a small amount of biotite and other dark minerals. Quartz content of 20% to 40%, alkaline feldspar more than plagioclase, accounting for about 2/3 of the total feldspar. Alkaline feldspar for a variety of potash feldspar and albite, plagioclase mainly sodium longer stone or longer stone. Dark minerals are mainly biotite, with a small amount of amphibole. With a granite structure or plaque structure. According to the type of minerals, can be divided into biotite granite, muscovite granite, horned granite, dolomite granite, etc .; according to the structure, can be divided into fine granite, granite granite, coarse granite, plaque granite, Granite, granite granite and gneissic granite, etc .; according to the contained minerals, can be divided into tin stone granite, containing niobium iron granite, containing beryllium granite, lithium mica granite, tourmaline granite. Common petrochemical, Yunying rock, electrical and petrochemical and other self-metamorphism. Granite is a widely distributed rock, each of the geological age has output. Form mostly rock-based, rock, rock and other clocks. In terms of origin, it is believed that granite is deep in the crust of granite magma by condensing crystallization or from the basalt magma crystallization of different, some people think that the depth of metamorphism and metasomatism caused by the results of granite. Many non-ferrous metals such as copper, lead, zinc, tungsten, tin, bismuth, molybdenum, precious metals such as gold, silver, rare metals such as niobium, tantalum, beryllium, radioactive elements such as uranium, thorium, etc., are related to granite. Granite structure is uniform, hard texture, beautiful color, is the quality of building stone.
Granite is the main component of silica, its content is about 65% -85%. The chemical properties of granite are weakly acidic. Normally, the granite is slightly white or gray, with a dark crystal, the appearance of a spot, potassium feldspar to make it red or flesh. Granite slowly formed by the magma cooling crystallization, buried in the surface below, when the cooling rate is unusually slow, it forms a very rough texture of granite, it is called crystalline granite. Granite and other crystalline rocks form the basis of the continental plate, it is also exposed to the Earth's most common intrusive rocks.
