Cobalt Facts

Cobalt Facts
Cobalt (Co) has an atomic number of twenty-seven, and twenty-seven protons in the nucleus of an atom. It is a silver-gray transition metal that is not found as an element in nature.
Interesting Cobalt Facts:
Georg Brandt is credited with isolating cobalt in 1735.
Even before its formal discovery, cobalt had been in use throughout history.
Cobalt pigments, specifically the blue, have been used for thousands of years.
The use of cobalt as a coloring agent dates back to the Bronze Age.
Historically, cobalt has been identified in ancient Egyptian art and Persian jewelry.
Cobalt was also found in use in the ruins of the ancient city Pompeii.
The cobalt pigment is most widely known for use in jewelry, glass, and paint.
Cobalt is only found in nature in compounds.
Through smelting, its pure form is hard and lustrous.
The smelting process of cobalt can release arsenic vapors.
The name cobalt comes from the German word kobold, meaning "goblin ore."
It is a ferromagnetic element.
Trace amounts of cobalt are found in most soil samples, minerals, and rocks.
Even less cobalt is found in most plants and animals.
It makes up about .0029% of the planet's crust.
Cobalt can often be found in copper and nickel minerals.
Cobalt has only one stable isotope, Co-59.
Co-59 is the only isotope of cobalt to exist naturally.
There are twenty-two known radioactive isotopes of cobalt.
The most stable cobalt radioisotope is Co-60, which has a half-life of more than 5.2 years.
Most of the other radioisotopes of cobalt have half-lives of less than one second.
The Democratic Republic of Congo currently extracts about 40% of the world's cobalt supply each year.
There are several ways to extract cobalt from ore, including froth flotation and leaching.
Apart from pigments, the main use for cobalt is to alloy it with other metals.

Related Links:
Facts
Periodic Table Facts
Animals Facts