Pyrite is a match of ancient man, a mineral of the sulfide class. Pyrite is the most common and polygonal sulfide. The pyrite contains minor impurities of cobalt, nickel, arsenic, antimony, copper, gold, silver and selenium. The shape of this mineral is a regular cylinder, with smooth, smooth sides, with a chip in one place — the mineral was extracted by core drilling. The surface of the mineral with transverse stripes, the upper and lower parts are chipped off. The color of the mineral is brass with a mottled run, not transparent, the fracture is uneven.

The mineral pyrite was used as flint to extract fire (flint, flint firearms). It served as a raw material for the production of sulfuric acid, sulfur and iron sulfate. With the profitability of production, the mineral pyrite is the raw material for the available impurities. In particular, pyrite processing waste is one of the main sources of selenium production. The solid phase formed during the processing of pyrite into sulfuric acid is called pyrite cinders. They mainly consist of Fe2O3 (crocus).

A number of patents have been registered for the use of pyrite in the preparation of mastics, expanded clay, cements, concretes, asphalt concretes; as well as in the composition of the charge during mine melting.

Pyrite is very difficult to process. All the complexity is associated with its fragility. Special equipment is used here.