Nickel looks like copper. About 30% of all mined nickel comes from sources in Ontario, Canada. Furthermore, from Russia (35%), Australia, Cuba and Indonesia.
Nickel is a hard, corrosion- resistant metal. Among other, from the mineral pentlandite, limonite, garnirite (in magma).
Glass is green when nickel is added. A kilogram of nickel can form 300km thread. Nickel is widely used to make coins and batteries.
Nickel melts at 1,453°C and boils at 2,732°C.
Nickel alloys with other metals by which the hardness and corrosion resistance is increased.
Nickel is essential for the human body, but when the amount incorporated is too large, it may be a danger to the health. Metallic nickel may cause allergic reactions.