The Domadia Group

Manganese compounds have been used by man for thousands of years. The ancient Egyptians and Romans used manganese compounds for dyeing in glass manufacture. In 1774 Johann Gottlieb Gahn succeeded in extracting pure manganese from brownstone. In the structure of the earth's crust manganese is the second most common heavy metal after iron.

Important manganese ore deposits are to be found in South Africa, Australia, India, China, Mexico, Ukraine and Russia amongst others.

"Manganese nodules" can also be found in the deep sea.

Properties

Manganese is a grey-white, hard heavy metal. In the air it remains stable by the formation of an oxide film.