Now, in what has been described as a “spectacularly preserved” discovery, a new species of spider has been identified from a fossil found inside iron pyrite, known as fool’s gold.

Despite its nickname, pyrite has very little in common with gold beyond its metallic luster. Also called iron sulfide, pyrite is part of a group of inorganic compounds known as sulfide minerals ...

Sometimes, there's more to iron pyrite than meets the eye. While testing it to differentiate between fool's gold and real gold, it's possible to find tiny amounts of real gold inside. And that's ...