| Answer | Crossword Clue |
|---|---|
| theralites | THERALITE, a holocrystalline igneous rock composed of plagioclase, nephelite and augite |
| theralite | a holocrystalline igneous rock composed of plagioclase, nephelite and augite |
| teschenite | a coarse-grained basic igneous rock composed of plagioclase and augite |
| teschenites | TESCHENITE, a coarse-grained basic igneous rock composed of plagioclase and augite |
| tephritic | of or like tephrite, an igneous rock consisting essentially of plagioclase and either leucite or nephelite, or both |
| basanite | basaltic rock composed chiefly of plagioclase, olivine, and augite |
