| Answer | Crossword Clue |
|---|---|
| SHALY | Resembling fissile rock. |
| SHALE | Fissile rock |
| SHALE | Fissile rock. |
| SHALE | Layered fissile rock |
| SHALY | Containing fissile rock. |
| LAVATIC | Resembling molten rock. |
| GNEISSY | Resembling laminated rock. |
| OOLITIC | Resembling a grainy rock. |
| GNEISS | Flaky rock resembling granite. |
