Schist is a protolith of gneiss.

Rock group	Metamorphic
Metamorphism type	Regional
Metamorphic rock class	Metapelitic Marl
Protolith	Phyllite

Schist in Hand Sample

Chlorite schist
Magnetite muscovite schist
Garnetiferous schist
Muscovite staurolite schist
Archean-aged schist from the Great Unconformity exposed at Wind River Canyon, WY

Schist in Thin Section

Thin Section GigaPans

Garnet mica schist, plane polars
Garnet mica schist, crossed polars
Chlorite schist, plane polars
Chlorite schist, crossed polars
Actinolite schist, plane polars
Actinolite schist, crossed polars
Talc tremolite schist, plane polars
Talc tremolite schist, crossed polars
Graphite schist, plane polars
Graphite schist, crossed polars

Garnet mica schist, plane polars

Garnet mica schist in plane polarized lightMagnification: 40xClick here for crossed polars: https://youtu.be/-P0qf3NC9AIClick here to explore this slide in p…

Garnet mica schist, plane polars

Garnet mica schist in plane polarized lightMagnification: 40xClick here for crossed polars: https://youtu.be/-P0qf3NC9AIClick here to explore this slide in p…

 

Talc tremolite schist, plane polars

Talc tremolite schist in plane polarized light.Magnification: 40xClick here for crossed polars: https://youtu.be/2x9Ic3L0wpgClick here to explore this slide …

Talc tremolite schist, crossed polars

Talc tremolite schist in cross polarized light.Magnification: 40xClick here for plane polars: https://youtu.be/o2K_Gelkk4EClick here to explore this slide in…

Graphite Schist, Plane Polars

Graphite schist in plane polarized light.Magnification: 40xClick here to watch graphite schist rotating in crossed polars: https://youtu.be/6WAkWKmNWnUClick …

Graphite Schist, Crossed Polars

Graphite schist in cross polarized light.Magnification: 40xClick here to watch graphite schist rotating in plane polars: https://youtu.be/14Ke3a4w578Click he…