Volcano crystal balls Magma, the super-hot molten rock which feeds volcanic eruptions, is generated many tens of kilometers below the surface in Earth's mantle. On its journey up to the surface ...

clues, like a tiny crystal ball” in an article for The Conversation—they could effectively compare non-mineralized rocks in the wider Benolong Volcanic Suite to the mineralization that took ...

"Zeolites are minerals rich in silicon and aluminium and are common in volcanic ... crystals) or can form secondarily, during the natural alteration of volcanic glass and ash, giving the rock ...