| Answer | Crossword Clue |
|---|---|
| GALENA | Main ore of lead |
| HEMATITE | Main ore of iron |
| FATHERLODE | Renamed main vein of ore? |
| ilmenite | A black mineral consisting of iron titanium oxide, of which it is the main ore |
| ilmenites | A black mineral consisting of iron titanium oxide, of which it is the main ore |
| cassiterites | A reddish, brownish, or yellowish mineral consisting of tin dioxide. It is the main ore of tin |
| cassiterite | A reddish, brownish, or yellowish mineral consisting of tin dioxide. It is the main ore of tin |
