| Answer | Crossword Clue |
|---|---|
| OCHER | Earthy oxide |
| tungstite | a yellow earthy mineral, tungsten oxide |
| tungstites | TUNGSTITE, a yellow earthy mineral, tungsten oxide |
| melaconite | an earthy black oxide of copper, arising from the decomposition of other ores |
| melaconites | MELACONITE, an earthy black oxide of copper, arising from the decomposition of other ores |
| hematite | very common mineral, iron oxide, Fe2O3, occurring in steel-gray to black crystals and in red earthy masses: the principal ore of iron |
