The word "锰矿" is formed by combining the character "锰", which represents the element manganese and is itself composed of the metal radical "钅" for meaning and the component "孟" for pronunciation, with the character "矿", meaning ore, which uses the stone radical "石" for meaning and the component "广" for pronunciation. This results in a compound term where "锰" specifies the type of metal and "矿" denotes its form as a mineral deposit, directly meaning "manganese ore".