Igneous and Metamorphic Rocks

Chemically Active Fluids
• Metasomatism - fluid transport during
metamorphism p can result in the ggain
or loss
of atoms. Clays release H2O (de-watering)
as they y change g to minerals such as kyanite y
or garnet.
• Hydrothermal alteration - injection of hot
water into rocks from metasomatism can
produce metallic ores such as lead and zinc.
zinc