| Clue | Source | Date |
|---|---|---|
| Aluminium silicate could be on a par with self (7) | ||
| Learner opening iron box finds mineral | The Times Cryptic | 18 Feb 2022 |
| Mineral left in box with iron lid | The Telegraph Toughie | 05 Mar 2021 |
| Abundant mineral | The Times Concise | 01 Aug 2017 |
| Mineral and iron bar left inside | ||
| Crystalline mineral: Var. |