| Answer | Crossword Clue |
|---|---|
| auriferous | (of rocks or minerals) Containing gold |
| argentiferous | (of rocks or minerals) Containing silver |
| titaniferous | (of rocks and minerals) Containing or yielding titanium |
| aluminous | (chiefly of minerals and rocks) Containing alumina or aluminum |
| magnesian | (chiefly of rocks and minerals) Containing or relatively rich in magnesium |
| mesocratic | of igneous rocks, containing 30-60 per cent of ferromagnesian minerals |
