01 / Origin story
How does schist form?
02 / Read the clues
How can you identify schist?
Use several clues together.
One photograph shows one specimen, not every variation.
03 / Commonly confused with
Similar at first glance.
Compare the materials side by side.
Photographs are not shown to the same scale.
04 / Out in the world
Where it’s found.
Deeply metamorphosed mountain belt cores — common throughout the Appalachians, the Rockies, and other major orogenic zones.
Continue exploring
More from this family.
Slate
Splits into thin, flat, smooth sheets — even more cleanly than the shale it came from
Phyllite
Distinctive silky/satiny sheen (from the small aligned mica crystals) — this is the fastest way to identify it
Gneiss
Bold, coarse banding, alternating light (quartz/feldspar) and dark (mica/hornblende) layers