BASALT
| Date | Clue |
|---|---|
| 2025-03-20 | Product of hardened lava |
| 2024-07-23 | About 90% of all volcanic rock on Earth |
| 2023-12-27 | Product of volcanic activity |
| 2022-10-20 | Dark volcanic rock |
| 2021-01-31 | Volcanic substance |
| 2020-10-02 | Volcanic rock |
| 2017-09-21 | Makeup of many moon rocks |
| 2012-01-19 | Volcanic rock |
| 2007-09-23 | Some moonrocks |
| 2005-10-28 | Rosetta stone composition |
| 2004-11-28 | Volcanic rock |
| 2004-03-10 | Black rock |
| 2000-08-25 | Igneous rock |
| 1994-07-27 | Volcanic rock |