Dictionary

a•lu•no•gen

Pronunciation: (u-lOO'nu-jun), [key]
—n.
a mineral, hydrous sulfate of aluminum, Al₂(SO₄)₃·18H₂O, occurring as a white, fibrous crust on quarry or mine walls.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

alunite

alure

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