Silicon, naturally occurring in the form of silica and silicates, is the most important semiconductor for the electronics industry. 在自然界從硅酸鹽和二氧化硅形式存在的硅是電子工業中最重要的半導體原材料。
The main unwanted impurities in iron ores include silica and silicates, alumina and aluminares, sulfur, phosphorus and arsenic, and moisture. 鐵礦石中的主要無用雜質有硅石和硅酸鹽，氧化鋁和鋁酸鹽，硫，磷和砷，以及水分。