| Answer | Crossword Clue |
|---|---|
| SILEX | Finely ground quartz or flint |
| SILEX | Finely ground quartz. |
| SILEX | Finely ground quartz |
| SILEX | Finely ground quartz used as paint filler |
| SILICA | Quartz or flint |
| SILEX | Mineral in the form of quartz or flint |
| conchoidal | Denoting a type of fracture in a solid (such as flint or quartz) that results in a smooth rounded surface resembling the shape of a scallop shell |
