ترکیب گرانیت

ترکیب شیمیایی اصلی گرانیت دی اکسید سیلیکون (SiO2 ~ 65٪) است و محتوای سایر اجزاء نسبتاً کم است (به طور کلی Fe2O3، FeO، MgO).<2%, CaO<3%). The mineral composition of granite is mainly silicate minerals, mainly quartz, feldspar and mica, among which the quartz content accounts for 20% to 40%. Since granite is mainly composed of light-colored silicon-aluminum minerals, and less iron-magnesium dark-colored minerals, its color is mainly light-colored, but the color is darker with more dark-colored minerals. Granite's mineral particles have larger crystals and similar particle sizes, showing mosaic and granular crystal structures. Different types of minerals are arranged in a regular or irregular manner.