Greenschist
Rock
Also called Chlorite schist and Green schist
About it
Green, foliated rock coloured by chlorite, epidote, and actinolite, formed from basalt at low temperature and pressure. Common in old volcanic belts such as the Abitibi gold region of Ontario and Quebec.
- Type
- Rock (metamorphic)
- Group
- Metamorphic (foliated)
- Colours
- green, dark green, greyish green
- Transparency
- opaque
- Cleavage and fracture
- splits along foliation
Typical values: real specimens vary. For more, see mindat.org.