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Grayish mineral
Answer for the clue "Grayish mineral ", 4 letters:
urao
Alternative clues for the word urao
Word definitions for urao in dictionaries
Wiktionary
Word definitions in Wiktionary
n. (context mineralogy English) The mineral trona.
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Trona \Tro"na\, n. [Of Egyptian or North African origin.] (Chem. & Min.) A native double salt, consisting of a combination of neutral and acid sodium carbonate, Na2CO3.2HNaCO3.2H2O , occurring as a white crystalline fibrous deposit from certain soda brine ...