Type Metamorphic Rock
Texture Non-foliated to weakly-foliated; Variable grain size
Composition Serpentine
Index Minerals
Color Mottled Green and gray
Miscellaneous May be harder than glass in places
Metamorphic Type Hydrothermal
Metamorphic Grade Low Grade
Parent Rock Peridotite
Metamorphic Environment Hydrothermal solutions concentrated during final stages of magma crystallization in batholiths or hot seawater solutions drawn down into subduction zones