Overview
Granite is a common igneous rock, mainly composed of quartz, feldspar and mica. It is widely used in construction and decoration materials because of its hard and durable properties.
Chemical composition
Main minerals: quartz (SiO₂), feldspar (potassium feldspar and plagioclase), mica (biotite and muscovite)
Minor minerals: amphibole, pyroxene, etc.
Physical properties
Color: Various, common ones are gray, pink, white, etc.
Luster: glass luster to oily luster
Hardness: 6-7 (Mohs hardness)
Density: 2.63-2.75 g/cm³
Structure: granular structure
Crystal structure
Crystal system: quartz is trigonal system, feldspar is monoclinic or triclinic system
Space group: varies depending on the type of mineral
Formation and origin
Formation environment: mainly formed in the cooling and crystallization process of magma deep in the earth's crust.
Main origin: distributed all over the world, such as China, India, Brazil, the United States, South Africa, etc.
Use of
Building materials: used for floors, walls, countertops, monuments, etc.
Decoration materials: used for carvings, decorations, etc.
Road construction: used as roadbed and pavement materials.
Mining and processing
Mining methods: open-pit mining and underground mining.
Processing process: including cutting, grinding, polishing and other steps.
Environmental and health impacts
Environmental impacts: dust and noise pollution may be generated during mining and processing, and environmental protection measures need to be taken.
Health impacts: Long-term exposure to granite dust may affect the respiratory system, and protection should be taken.
Economic importance
Global trade: Granite is an important part of the global trade in building materials, and its price is affected by supply and demand, international market fluctuations and other factors.
Future prospects
Technological progress: With the advancement of mining and processing technology, the utilization efficiency of granite will be further improved.
Sustainable development: Promote green mining and processing technology to reduce the impact on the environment.
Summary
Granite, as an important igneous rock, has a wide range of applications in construction and decoration. Understanding its properties, formation, mining and application is of great significance for the rational use of resources and protection of the environment.
Please indicate the source when reprinting.
Article Title:The properties, structure and uses of granite
Article link:https://www.weaveverses.com/minerals/The-properties-structure-and-uses-of-granite.html
