| Answer | Crossword Clue |
|---|---|
| SCHIST | Foliated rock. |
| GNEISS | Foliated rock. |
| phyllite | a foliated rock |
| phyllites | PHYLLITE, a foliated rock |
| schist | a metamorphic crystalline rock that has a closely foliated structure and can be split along approximately parallel planes |
| gneisses | A metamorphic rock with a banded or foliated structure, typically coarse-grained and consisting mainly of feldspar, quartz, and mica |
