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Views: 0 Author: Site Editor Publish Time: 2025-06-20 Origin: Site
https://www.Granite-components.com，E-mail：Granitecomponents@163.com
In the mineral grains that compose Granite/Marble, feldspar and quartz account for more than 90%, with feldspar having the highest proportion. Feldspar often appears white, gray, or flesh-red, while quartz is mostly colorless or grayish-white, forming the basic tone of Granite/Marble. As hard minerals, feldspar and quartz have Mohs hardness of 6-6.5 and 7 respectively, making them difficult to scratch with a steel knife.
The dark spots in Granite/Marble are mainly composed of biotite, along with a small amount of other minerals. Although biotite has a lower hardness (Mohs 2-3), its stress resistance is not weak, and its content in the rock is usually less than 10%. This mineral composition provides the solid material foundation for Granite/Marble's durability.
Another key to Granite/Marble's sturdiness lies in the tight bonding between mineral grains—they interlock with each other, resulting in a porosity typically below 1%. This dense structure enables Granite/Marble to withstand strong pressure and effectively resist water penetration.
