|Atomic mass||54.938 amu|
|Number of Stable Isotopes||1|
|Density (grams per cc)||7.440 g/cm^3|
|Date of discovery||1774|
|Name of discoverer||Johann Gahn|
|Name origin||From the Latin word mangnes (magnet)|
|Uses||Steel, batteries, ceramics, coins, fertilizer and animal feed additives|
|Obtained from||Pyrolusite, psilomelane, cryptomelane, manganite, rhodochrosite|
Manganese is used in small amounts to change the propeties of steel and other useful alloys.
It is remarkable in all the other metals in that it is formed by the radioactive breakdown of magnesium isotopes, yet is still found in sufficient quantities to be useful in common, everyday processes and materials. Manganese is found in pyrolusite (magnesium) ore along with magnesium, and the two are separated in a process similar to that of iron in a blast furnace, due to their significantly different melting points (one melts and is tapped off while the other remains solid; this is then melted and tapped off). It can also be found in pure manganese ore, where all the magnesium has decomposed. These deposits, however, are scarce.
|Periodic Table of the Elements|