What kind of mineral is the riddle talking about? He is black, shiny, a real helper for people.

What kind of mineral is the riddle talking about? He is black, shiny, a real helper for people. It gives light all around, it helps to melt steel, make paints and enamels.

It’s about coal. It is without it that modern energy, steel production and the functioning of chemical production are impossible.

And if we talk about brilliance, then the brilliance is characteristic of coal, which is called anthracite. It differs from conventional bituminous coal by its high carbon content, which results in its metallic luster and high degree of hardness.