长石(Feldspar)

        长石是一族含钙、钠和钾的铝硅酸盐矿物，是地壳中最常见的矿物之一。它有多种颜色，如白色、灰色、粉红色等，莫氏硬度为 6 - 6.5，具有良好的耐磨性和化学稳定性，常用于玻璃、陶瓷、搪瓷等工业。

Feldspar is a group of aluminosilicate minerals containing calcium, sodium, and potassium, and it is one of the most common minerals in the earth's crust. It has various colors, such as white, gray, pink, etc. Its Mohs hardness is between 6 and 6.5. It has good abrasion resistance and chemical stability and is often used in industries such as glass, ceramics, and enamel.