| Clue | Source | Date |
|---|---|---|
| Mineral type which includes asbestos and olivine (8) | ||
| Graduate leaves Roman church taking early leaders salt (8) | ||
| Foolish duchess picked up mineral | ||
| Mineral found in the rocks on the Earth's crust (8) | ||
| Stupid-sounding moggy beginning to eat salt | ||
| Quartz, e.g | New York Times | 17 Aug 2019 |
| Quartz, e.g. | ||
| Quartz, mica or talc | USA Today | 28 Apr 2016 |
| Kind of compound comprising most of the earth's crust | The Chronicle of Higher Education | 29 Jan 2016 |
| Kind of compound comprising most of the earth's crust | ||
| Mica or quartz | ||
| Mica or garnet | ||
| Quartz or mica | ||
| Cement component | ||
| Common mineral. | ||
| Derivative of a certain acid. |