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A hard glassy mineral consisting of an oxide of magnesium and aluminum
Answer for the clue "A hard glassy mineral consisting of an oxide of magnesium and aluminum ", 6 letters:
spinel
Alternative clues for the word spinel
Word definitions for spinel in dictionaries
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Spinel \Spi*nel"\, Spinelle \Spi*nelle"\, n. [F. spinelle, or LL. spinellus, perhaps from L. spina a thorn, a prickle, in allusion to its pointed crystals.] (Min.) A mineral occuring in octahedrons of great hardness and various colors, as red, green, blue, ...
WordNet
Word definitions in WordNet
n. a hard glassy mineral consisting of an oxide of magnesium and aluminum; occurs in various colors that are used as gemstones
Wiktionary
Word definitions in Wiktionary
n. (context mineralogy English) Any of several hard minerals of cubic symmetry that are mixed oxides of magnesium and aluminium and are used as gemstones of various colours.