Silicates 2 : The largest group among minerals. The salts of the silicic acids but all are very different from one another. All contain silica as a component. They include sand, clay, feldspars and garnets
H. J. Porter (Chairman - Technical Committee), Dictionary of Fire Technology, The Institution of Fire Engineers, The Victory Press (Leicester) Ltd. 1979 UK. (Fr Tech - Brit) {81}