 Discovery Information |
| Who:
Johann Gahn
|
| When: 1774 |
| Where: Sweden |
|
| Name Origin |
| Latin: mangnes (magnet); Ital. manganese. |
|
| Sources |
| Most abundant ores are pyrolusite (MnO2), psilomelane [(BaH2O)2Mn5O10] and rhodochrosite (MnCO3). Manganese is mined in South Africa, Russia, Ukraine, Georgia, Gabon and Australia.. |
|
| Uses |
| Manganese is essential to iron and steel production, it also used in some aluminium alloys. It is also used in making; batteries, axles, rail switches, safes, plows and ceramics. |
|
| Notes |
| More than 25 million tonnes of manganese ores are mined every year, representing 5 million tons of the metal, reserves of manganese are estimated to exeed 3 billion tonnes. |
| Manganese is one out of three toxic essential trace elements, which means that it is not only necessary for humans to survive, but it is also toxic when too high concentrations are present in a human body. When people do not live up to the recommended daily allowances their health will decrease. But when the uptake is too high health problems will also occur. |
