S₁C₃H₄I₁S₁T₁S₁

12 points

SCHISTS is validvalid

SCHIST, a rock that readily splits into parallel layers [n]

51,040 of 196,601 in NWL2023·also valid in CSW24

SCHIST, a type of metamorphic rock, also SHIST [n]

214,979 of 280,887 in CSW24·also valid in NWL2023