Alunite

==English==
thumb|Alunite
===Etymology===
From its earlier name aluminilite, named in 1824.Richard V. Gaines, H. Catherine W. Skinner, Eugene E. Foord, Brian Mason, and Abraham Rosenzweig: Dana's new mineralogy, John Wiley & Sons, 1997
===Noun===
# A gray, water-soluble mineral, potassium aluminium sulphate; the natural source of alum, KAl3(SO4)2(OH)6.
===References===
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