Its name derives from the Magnesia district of Thessaly, where the soft white mineral steatite talc — a hydrated magnesium silicate — was found in ancient Greece. Magnesium was first isolated ...

It's the first time such a discovery has been made, the researchers claim. And it's due to "hydrous magnesium silicates," roughly 370 miles beneath the surface, indicating that water on the slab's ...

These altered minerals could become amphibole (a hydrous silicate) or serpentine (another ... how much silicon, aluminum and magnesium are in a rock—the geologists can tell a little more about ...