How to distinguish the common types of stones in life?

? Rock should not only have a certain theoretical basis, but also have rich practical experience. Rocks can be divided into three categories: sedimentary rocks, metamorphic rocks and magmatic rocks. When naming rocks, we should consider the appearance, such as flesh red and khaki, and the structure, such as block structure and layered structure. This should be observed with a microscope, such as cryptocrystalline texture, and the composition, such as granite containing feldspar, quartz and mica. Even if it is only a rough understanding, you must have a good understanding of mineralogy. After all, rocks are all made of minerals, just like a building made of bricks, cement and steel bars. Let's talk about the relationship between magmatic rocks, metamorphic rocks and sedimentary rocks.

? Magmatic rocks are metamorphic rocks formed by underground magma eruption, sedimentary rocks are formed by external factors such as high temperature and high pressure, and marble mentioned in the titles of magmatic rocks and metamorphic rocks is metamorphic rocks. Before metamorphism, limestone in sedimentary rocks is dolomite, so it is necessary to observe the particles and test the content of oxidation ghost and oxidation beauty. Granite should be the easiest to identify.

? Generally, it consists of red or white feldspar particles, gray quartz and black mica flakes. Belongs to magmatic rocks. Sandstone is composed of feldspar, quartz and other detritus, and it is a sedimentary rock.

? After all, shale is easy to identify. As the name implies, schistose structure contains many argillaceous components. In a word, petrology is extensive and profound, and few figures are difficult to explain. It is not a problem to name these common rocks as long as they are carefully observed and summarized.

? After all, an illiterate old miner in the mine has been working for many years, and the stones in the mine are also recognized as 7788.