Schist (likely mica schist) — metamorphic Identification & Properties | Geo-Gem
Schist (likely mica schist) is a metamorphic. Test foliation by gently splitting the specimen—schist will often flake along mica-rich bands. Scratch it with a steel nail: if it scratches easily (Mohs hardness 3-4), it's mica-rich schist; if not, consider quartzite. Use a hand lens to…