What are limestone and granite? (short)
Granite is an igneous rock [2] formed under the surface of the earth. Granite, which is hard to be eroded by acid or weathering, often used in building materials. Granite (Granite) etymology is the Latin granum, mean grain or granule. Because granite is often formed plutonic rocks, mineral particles are well developed, recognizable, hence the name. The Chinese character of the granite is derived from the Japanese translation. In the dictionary and books to geology in the early Meiji era Granite translation granite flowers or just rock. The flower describes the rock as having beautiful markings, and a bar or hillock indicates that the rock is very hard, which means a hard rock with a flower like pattern. Chinese scholars continue to use this translation.
Lime and limestone are widely used as building materials. Limestone can be directly processed into stone and fired into quicklime. Quicklime and hydrated lime. The main component of quicklime is CaO, generally a block, pure white, containing impurities as light gray or light yellow. Quicklime absorption of moisture or water becomes slaked lime, lime is also known as slaked lime, its main component is Ca (OH) 2. Slaked lime is prepared into lime slurry, lime paste, lime mortar and so on. Cement is made from limestone and clay, which is calcined at high temperature. The glass is made of limestone, quartz sand, soda ash and so on. Iron ore is used as a flux to remove gangue. With lime as slagging material in steelmaking, removal of sulfur, phosphorus and other harmful impurities. Calcium carbide (the main component is CaC2) is the reaction of quicklime and coke in the furnace. Soda ash is made from limestone, salt, ammonia and other raw materials through a series of reactions. Caustic soda production by lime and soda ash reaction. Bleaching was made by the reaction of pure lime and chlorine. Made of calcium chloride, calcium nitrate, calcium sulfate and calcium salt by important chemical processing of limestone. Lime water can remove the temporary rigid, used as a water softener. Made of pure calcium carbonate powder, which is used as filler for rubber, plastic, paper, toothpaste, cosmetics and so on. Soda lime made of lime and caustic soda, used as an absorbent for carbon dioxide. Quicklime as a desiccant and disinfectant. In agriculture, with quick lime sulfur mixture, such as pesticide bordeaux. The application of slaked lime in the soil can neutralize the acidity of the soil, improve the structure of the soil, and supply the calcium needed for the plant. Use lime to brush the trunk to protect trees.
The main component of limestone is calcium carbonate. Granite is mainly composed of feldspar and quartz.
