Alchemy Alphabet: VITRIOL (prob.: ëVisita Interiora Terrae Rectificando Invenies Occultum Lapidemû > Vitriolum "sulphuric acid"; vitrum "glass; transparent as crystal"), COPPERAS (fr.: Couperose), e.g.: Green vitriol and Blue vitriol. Crystalline hydrate of Sulfate: Chemical formula=[MeSOâââââ¬Â¢nHâââO].
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