Answer | Crossword Clue |
---|---|
dumortierite | (French) an orthorhombic borosilicate of aluminium occurring as small violet or blue needles or fibrous masses esp in gneisses and schists |
dumortierites | DUMORTIERITE, (French) an orthorhombic borosilicate of aluminium occurring as small violet or blue needles or fibrous masses esp in gneisses and schists |
dumortierite | A rare blue or violet mineral occurring typically as needles and fibrous masses in gneiss and schist. It consists of an aluminum and iron borosilicate |