Tag: alunite

Crazy Useful Thing of the Day: Alunite

Styptic made with alunite

Alunite (hydrated aluminum potassium sulfate) is a naturally occurring mineral containing alum.  The name “alum” is used for several different compounds, but usually refers to the double sulfate salt of aluminum and either potassium, ammonium, or sodium.  Most commonly, it refers to potassium alum.… Continue Reading “Crazy Useful Thing of the Day: Alunite”