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Metamorphic rock

Schist

Medium to high grade, from many parent rocks (e.g., shale or basalt). Foliated, with crystals (especially mica) visible without magnification; may contain garnet, or chlorite if derived from basalt.

Schist with mica and garnet
Schist with mica and garnet. Karla Panchuk (2018), CC BY-SA 4.0. Source
Garnet-mica schist, thin section
Garnet-mica schist, thin section. Wikimedia Commons (author and license on the file page). Source

Photos are hosted by their original sites and shown under their open licenses (CC BY, CC BY-SA, public domain or Open Government Licence). Click a photo for its source page.

More photos and thin sections

Alex Strekeisen: Schist · Alex Strekeisen: Garnet micaschist

Other metamorphic rocks

Slate · Phyllite · Gneiss · Amphibolite · Marble · Quartzite · Hornfels · Migmatite

Sources

Panchuk, Physical Geology 10.3: Classification of Metamorphic Rocks