Answer | Crossword Clue |
---|---|
bluestones | BLUESTONE, hydrated copper sulphate, aka blue vitriol |
bluestone | hydrated copper sulphate, aka blue vitriol |
chalcanthite | native hydrated copper sulphate, a blue triclinic mineral usually occurring as tabular crystals |
chalcanthites | CHALCANTHITE, native hydrated copper sulphate, a blue triclinic mineral usually occurring as tabular crystals |