| Answer | Crossword Clue |
|---|---|
| ironstones | IRONSTONE, a hard, earthy ore of iron |
| ironstone | a hard, earthy ore of iron |
| OCHER | Earthy iron ore used as a pigment. |
| ocher | an earthy usually red or yellow and often impure iron ore used as a pigment |
| taconite | low-grade iron ore, containing about 27 percent iron and 51 percent silica, found as a hard rock formation in the Lake Superior region |
| taconites | low-grade iron ore, containing about 27 percent iron and 51 percent silica, found as a hard rock formation in the Lake Superior region |
