TextureNon-foliated to weakly-foliated; Fine-grained
Index MineralsTalc
ColorWhite, green or gray
MiscellaneousSofter than fingernail; may be schistose in texture
Metamorphic TypeHydrothermal
Metamorphic GradeLow to Medium Grade
Parent RockPeridotite
Metamorphic EnvironmentHydrothermal solutions concentrated during final stages of magma crystallization in batholiths or hot seawater solutions drawn down into subduction zones

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