Clue | Source | Date |
---|---|---|
Titanium dioxide | ||
To satisfy, PPE must be natural mineral | ||
Mineral form of titanium dioxide | The Telegraph General Knowledge | 14 Dec 2020 |
Crystalline form of titanium dioxide | ||
Crystalline form of titanium dioxide | ||
Pigment for paints | ||
Octahedrite, a mineral. | ||
Octahedrite. | ||
Mineral used in paints. |