Chapter 21: Metamorphism - Faculty web pages

The sequence of zones now recognized, and the typicalmetamorphic mineral assemblage in each, are:Chlorite zone: : chlorite, muscovite, quartz and albiteBiotite zone: biotite, , chlorite, muscovite, quartz, and albiteGarnet zone: : red almandine garnet, usually with biotite, chlorite,muscovite, quartz, and albite or oligoclaseStaurolite zone: staurolite, , biotite, muscovite, quartz, garnet, andplagioclase. Some chlorite may persistKyanite zone: kyanite, , biotite, muscovite, quartz, plagioclase, andusually garnet and staurolite Sillimanite zone: sillimanite, biotite, muscovite, quartz,plagioclase, garnet, and perhaps staurolite. Some kyanite may alsobe present.