A crystal is a solid material whose atoms or ... Pyrite, chemically known as iron sulfide (FeS₂), is one of Earth’s most common sulfide minerals. Miners and prospectors have encountered ...

I ron sulfides in hot springs around volcanic vents on land could have provided carbon in the form the earliest life needed to get started. A demonstration of the effectiveness of doped iron ...

Several years ago researchers showed that magnetite crystals contained within ... mechanism by which these organisms synthesize iron oxides and sulfides, we may also be able to answer whether ...