Pyrite
Pyrite means flint (greich. pyrites lithos) because it was used in ancient times for striking sparks. Synonyms for it are, for example, green gravel, iron gravel, fool's gold or gravel ball.
Pyrite is primarily formed in acidic magmatites, which are found in the Erzgebirge, Greichenland, Turkey, the USA and Peru. Secondarily, it is formed by decomposition processes in marine sediments and occurs in the USA on Elba and Illionis.
Pyrite is brass-gold or grey-yellow.
Mineral class of sulphides
Formula: FeS2 + Ag,As,Au,Co,Cu,Ni,Sb,Tl,Zn
Mohs hardness: 6 - 6.5
Density: 5 - 5.2
Fissility: imperfect, brittle, conchoidal fracture
Stroke colour: greenish-black
Transparency: opaque
Healing properties
Self-recognition, dissolution, makes open, direct and honest, reveals secrets and hidden contents of consciousness