What is Manganese?
Manganese is a naturally occurring metallic element. It can be found on the periodic table with the symbol ‘Mn’ and atomic number 25. It is a hard, brittle, silvery-grey metal that belongs to the group of transition metals. Manganese plays important roles both in nature and in many human-made applications.
Who Discovered Manganese?
The discovery of manganese as a distinct element is primarily credited to the Swedish chemist Carl Wilhelm Scheele. In 1774, Scheele identified manganese as a separate element after studying pyrolusite, a common manganese ore. In the same year, his colleague, Johan Gottlieb Gahn, successfully isolated a pure, metallic sample of manganese by reducing manganese dioxide with carbon.
What Does the Name “Manganese” Mean?
The name “Manganese” has its roots in the Greek word “magnes,” which refers to “magnet.” This might seem unusual because manganese metal itself is not strongly magnetic. However, the name was derived from “magnesia,” a region in Greece known for producing both magnetite (a magnetic iron ore) and pyrolusite (an ore of manganese). Early chemists often confused manganese ores with iron ores due to their similar appearance and the fact they were found in the same region. Over time, as these distinct minerals were understood, the element found in pyrolusite was named manganese.
Five Quick Facts About Manganese
- Abundant in Earth’s Crust: Manganese is the twelfth most abundant element in the Earth’s crust. Significant deposits of manganese ore are found globally, including substantial reserves within India, particularly in states like Odisha, Karnataka, Madhya Pradesh, and Maharashtra. Vast amounts are also found in deep-sea nodules on the ocean floor, including in the Indian Ocean.
- Crucial for Steel Production: Approximately 90% of all manganese produced worldwide is used in the steel industry. It acts as a deoxidizer and desulfurizer, removing unwanted impurities from steel, and also enhances the strength, hardness, and corrosion resistance of the metal.
- Used in Everyday Products: Manganese compounds are essential components in the manufacturing of various dry-cell batteries, like those found in flashlights and remote controls. It is also used as a colorant in glass and ceramics.
- Vital for Living Organisms: Manganese is an essential trace element for all known living organisms, including humans, animals, and plants. It plays a critical role in various biological processes, such as supporting enzyme function, bone development, and metabolism.
- Creates Vibrant Colors: Manganese can exist in several different oxidation states, which gives its compounds a wide range of vivid colors. For instance, potassium permanganate, a manganese compound often used as an antiseptic or disinfectant, is known for its intense deep purple color.