Sulphur crystals - Sulphur often forms around hot springs, volcanoes and vents where hot sulphur-rich gases are released. Some

- Image ID: D9B0NA
World History Archive / Alamy Stock Photo
Image ID: D9B0NA
Sulphur crystals - Sulphur often forms around hot springs, volcanoes and vents where hot sulphur-rich gases are released. Some of the finest sulphur crystals in the world come from Sicily where the sulphur has been produced by the action of bacteria on the sulphur minerals, gypsum and anhydrite. These bacteria get their energy from the sulphur minerals, leaving behind pure sulphur as a waste product.