ALUNITE FOR SALE

Alunite is a hydrated aluminum potassium sulfate mineral found in volcanic rocks, such as rhyolites, andesites, and trachytes. It is formed when these rocks react chemically with sulfurous vapors during the oxidation and leaching of metal sulfide deposits. It was first observed in the 15th century at Tolfa, near Rome, where it was mined for the manufacture of alum.
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4 Items ($125 to $349)