| Answer | Crossword Clue |
|---|---|
| MICA | Mineral used as an insulator |
| MICA | Silicate used as an insulator |
| MUSCOVITE | Mica that's used as an electrical insulator |
| SPINEL | Mineral used as a gem |
| SOAPSTONE | Mineral used as chalk by tailors |
| BARITE | Mineral used as a weighting agent |
