NameGreenstone
TextureNon-foliated to weakly-foliated; Fine-grained
CompositionEpidote and Chlorite
Index MineralsEpidote and Chlorite
ColorGreen
MiscellaneousHarder than glass
Metamorphic TypeRegional
Metamorphic GradeLow Grade (Low P - Low T)
Parent RockBasalt; Mafic igneous rocks
Metamorphic EnvironmentLow grade regional metamorphism along a convergent plate boundary

Previous Metamorphic Rock Home Page Next