| Answer | Crossword Clue |
|---|---|
| monzonites | MONZONITE, a coarse-grained intermediate igneous rock |
| monzonite | a coarse-grained intermediate igneous rock |
| clinkstone | a fine-grained intermediate igneous rock, aka phonolite, that rings when struck by a hammer |
| phonolite | a fine-grained intermediate igneous rock that rings when struck by a hammer, aka clinkstone |
| clinkstones | CLINKSTONE, a fine-grained intermediate igneous rock, aka phonolite, that rings when struck by a hammer |
| phonolites | PHONOLITE, a fine-grained intermediate igneous rock that rings when struck by a hammer, aka clinkstone |
