| Answer | Crossword Clue |
|---|---|
| SOFT | Type of rock found in '70s |
| ELO | Big '70s-'80s band inducted into the Rock and Roll Hall of Fame in 2017 |
| ELO | Inits. in 70's-80's rock |
| ELO | Inits. in '70s and '80s rock |
| ROBERT | Plant found in the Rock and Roll Hall of Fame |
| MICA | Rock found in sheets |
| LAVA | Rock found in rivers |
| LAVA | Rock found in rivers? |
| OOLITE | Rock found in limestone |
| ORE | Metallic rock found in veins |
| CHERT | Rock found in limestone beds |
| ORES | They're found in rock bands |
| SHALE | Rock in which fossils can be found |
| TALC | Soft rock found in the eight longest Across answers |
