| Answer | Crossword Clue |
|---|---|
| SHALE | Rock that splits easily |
| SCHIST | Coarse-grained rock that splits easily |
| SHALE | Rock that splits into bits |
| SLATE | Easily split rock |
| FREESTONE | Easily cut rock. |
| SHALE | Easily split rock |
| SCHIST | Easily split rock |
| FRIABLE | Easily crumbled, as rock |
| MUDSTONE | Rock that's easily eroded |
| SCHIST | Easily-split variety of rock. |
| SCHIST | A slaty rock, easily split. |
