| Answer | Crossword Clue |
|---|---|
| amphibolite | rock composed of amphibole; hornblende |
| amphibolites | AMPHIBOLITE, rock composed of amphibole; hornblende |
| DIORITE | Igneous rock composed of feldspar and hornblende |
| syenites | A coarse-grained gray igneous rock composed mainly of alkali feldspar and ferromagnesian minerals such as hornblende |
| andesitic | dark-colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite |
| andesites | dark-colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite |
| andesite | dark-colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite |
