What causes sericite alteration?
What causes sericite alteration? Sericitic alteration or sericitization is a process of mineral alteration caused by hydrothermal fluids invading permeable country rock. Sericitic alteration occurs within the phyllic alteration zone. ... What alters to sericite? Sericite is produced by the alteration of orthoclase or plagioclase feldspars in areas that have been subjected to hydrothermal alteration typically associated with copper, tin, or other hydrothermal ore deposits. Sericite also occurs as the fine mica that gives the sheen to phyllite and schistose metamorphic rocks. What causes metasomatism? In the metamorphic environment, metasomatism is created by mass transfer from a volume of metamorphic...