Manganese is a chemical element; it has the symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. First isolated in the 1770s, mangane
Pure manganese cube and oxidized manganese chips
Manganese(II) chloride crystals – the pale pink color of Mn(II) salts is due to a spin-forbidden 3d transition.
Aqueous solution of KMnO4 illustrating the deep purple of Mn(VII) as it occurs in permanganate
Some of the cave paintings in Lascaux, France, use manganese-based pigments.