Jarosite n. : An ocher-yellow mineral occurring on minute rhombohedral crystals. It is a hydrous sulphate of iron and potash.

Example:


Taxonomy
Jarosite, free encyclopedia, SO4, potassium, sulfate mineral, iron sulfides, Physical Properties, History, materials science, mineral, search, iron, chemical formula, KFe, byproduct, purification, AMD, environments.

Defination from the web:
Jarosite is often produced as a byproduct during the purification and refining of Zinc and is also commonly associated with AMD (acid ... Jarosite is also a more generic term denoting an extensive family of compounds of the form AM3(OH)6(SO4)2, where A+ = Na, K, Rb, NH4, H3O, Ag, Tl ...