NameSlate
TextureFoliated; Very fine-grained
CompositionChlorite, Plagioclase, Quartz
Index Minerals
ColorBluish-gray
MiscellaneousFoliation surface is dull and planar; Slaty Cleavage
Metamorphic TypeRegional
Metamorphic GradeLow Grade (Low P - Low T)
Parent RockShale or Mudstone
Metamorphic EnvironmentLow grade regional metamorphism along a convergent plate boundary

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