Granite is wear-resistant, not easy to weather, and has a bright color. The color can be maintained for more than 100 years. The board has good assembly properties. In recent years, it has been widely used in high-end architectural decoration projects by consumers of all ages. However, there are too many types of granite. In many cases, people not only cannot distinguish between various types of granite, but it is even easy to confuse granite and marble.
Granite is rich in resources and has many types, and has been widely used in civil engineering since ancient times. There are more than 100 varieties of natural granite in China, mainly produced in Sichuan, Shandong, Guangxi, Fujian, Shanxi, Henan and Inner Mongolia. There are too many types of granite. In many cases, people not only cannot distinguish various types of granite well, but it is even easy to confuse granite and marble. Today, we will take a look at the classification methods of granite:
01. Classification by geological rock type Granite can be divided into three types: magmatic granite, metamorphic granite and sedimentary granite according to the types of rocks in geology. This type of classification is more common in academics or papers, and it is rarely used in daily life to distinguish
02. Classified according to the size of the feldspar crystals contained Generally speaking, granite can be divided into three types:
fine-grained granite, medium-grained granite and coarse-grained granite. There is no significant size difference between the three. The average diameter of fine-grained granite feldspar crystals is 1.6mm-3.2mm, and the bulk density is relatively high. The average diameter of medium-grained granite feldspar crystals is 6.4mm. The average diameter of coarse-grained granite feldspar crystals is about 12.7mm, and there are also crystals with larger diameters, some even reaching a few centimeters, but the bulk density of coarse-grained granite is relatively low.
03. Sort by color
In terms of color, Chinese granite has black, white, red, gray blue, yellow, purple, green, color, and color series, among which black and gray granite have great advantages in China. When we usually distinguish granite, most of them are distinguished by color or region, so this type will be more common.
