Alunite Definition

ălyə-nīt
noun
A gray mineral, chiefly KAl3 (SO4 )2 (OH)6 , used in making alum and fertilizer.
American Heritage
A semihard, hydrous mineral, KAl3(SO4)2(OH)6, used to produce alum.
Webster's New World

(mineralogy) A gray, water-soluble mineral, potassium aluminium sulphate; the natural source of alum, KAl3(SO4)2(OH)6.

Wiktionary

Origin of Alunite

  • French from alun alum from Latin alūmen

    From American Heritage Dictionary of the English Language, 5th Edition

  • From its earlier name aluminilite, named in 1824.

    From Wiktionary

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