Fine granite stone nitrate 3mm-5mm

Granite belongs to intrusive rocks in acidic magmatic rocks, which is a common type of rock in this category, mostly in light flesh red, light gray, gray white, etc. Medium coarse grain, fine grain structure, blocky structure. There are also some structures such as speckled structures, spherical structures, and gneiss like structures. The main minerals are quartz, potassium feldspar, and acid plagioclase, while the secondary minerals are biotite, amphibole, and sometimes a small amount of pyroxene. There are many types of accessory minerals, including magnetite, garnet, zircon, apatite, tourmaline, fluorite, etc. Quartz content is higher in various magmatic rocks, and the content of potassium feldspar is generally higher than that of plagioclase. The proportion of the two is often two-thirds of the total feldspar content in potassium feldspar and one-third in plagioclase. Potassium feldspar in granite is mostly light flesh red, but there are also gray white and gray.