iron ores and impurities

Iron and Types of Iron | iron ores and impurities ,Iron and Types of Iron. Iron is a chemical element with symbol Fe (from Latin word Ferrum). Its atomic number is 26 and atomic mass is 55.85.The Advanced Technology of Ancient ChinaAn Overview. Around 2500 years ago, when no one in Europe or the Middle East could melt even one ounce of iron the Chinese were casting multi-ton iron objects.