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alunite

noun al·u·nite \ˈal-yə-ˌnīt, ˈa-lə-\

Definition of ALUNITE

:  a mineral that consists of a hydrous potassium aluminum sulfate and occurs in massive form or in rhombohedral crystals
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Origin of ALUNITE

French, from alun alum
First Known Use: 1823

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