1 Facts
1.1 Interesting Facts
- Manganese is an essential trace element in all forms of life.
- Manganese metal oxidizes very easily, but it does not fuse that easily.
- Chromium is highly reactive, hence it is not found free in nature.
- Ores of Chromites mineral are the major source of Chromium metal.
- Almost 90% leather tanning is done with the help of chromium.
1.2 Sources
Found in Minerals, Mining, Ores of Minerals
Found in Minerals, Mining, Ores of metals, Ores of Minerals
1.3 History
1.3.1 Who Discovered
Johann Gottlieb Gahn
Louis Nicolas Vauquelin
1.3.2 Discovery
In 1774
In Between 1797 - 1798
1.4 Abundance
1.4.1 Abundance In Universe
8 * 10-4 %1.5 * 10-3 %
5E-09
0.11
1.4.2 Abundance In Sun
~0.001 %~0.002 %
1E-08
0.1
1.4.3 Abundance In Meteorites
1.4.4 Abundance In Earth's Crust
1.4.5 Abundance In Oceans
1.4.6 Abundance In Humans