斜长岩

例句：

1. 1.The mountain is covered in a thick layer of snow, making it difficult to climb.
   这座山被厚厚的雪层覆盖，很难攀登。
2. 2.The silica content in the rock is high, which makes it resistant to weathering.
   这种岩石的二氧化硅含量很高，因此它对风化具有抵抗力。
3. 3. The mineralogy of the rock is complex, containing various minerals like quartz and mica.
   这种岩石的矿物组成复杂，包含有石英和云母等矿物。