alchemy: alum (alumen)

alchemy alchymia alum alumen aluminium aluminum argile atramentum azoth balsam book chemical chemicals chemistry clay copperas crystals elixir ferrous flowers formula green grimoire herbs hermetic hieroglyphics hydrated iatrochemie kabbalistic knowledge laboratory lapis life magic magnum matters medieval metals minerals mystery mystic occult opus philosophers philosophorum potash potassium potassiumaluminium quintessence red salt sign spagyric stone stuffs substance sulfate sulphate sutorium symbol tincture transmutation vector vitriol zauberbuch