pentlandite

Pentlandite is a mineral composed mainly of iron, nickel, and sulfur, with the chemical formula (Fe,Ni)_9S_8. It appears as metallic-looking, copper-bronze to bronze-colored crystals or masses. Pentlandite is significant because it is the primary ore from which nickel is extracted, a metal used in stainless steel, batteries, and various alloys. It naturally occurs in igneous and sulfide mineral deposits, often alongside other sulfide minerals. Prospecting and mining pentlandite are essential for sourcing nickel resources globally.