alunite

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noun al·u·nite \ˈal-yə-ˌnīt, ˈa-lə-\

Definition of alunite

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

Origin and Etymology of alunite

French, from alun alum


First Known Use: 1821


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