Pyrite
The mineral , or iron pyrite, also known as fool’s gold, is an iron sulfide with the chemical formula FeS₂. Pyrite is considered the most common of the sulfide minerals. Pyrite’s metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool’s gold. Hardness: 6–6.5 Luster: Metallic, […]