Green Vitriol
WHAT IS A VITRIOL? Simply put, a vitriol is a metallic sulfate compound, often but not always hydrated. The crystals of most vitriols are glassy and all are soluble in water, making solutions containing sulfuric acid. In fact, the very word vitriol has its origin in the Latin word for glass, vitrum. Out of the ten or so vitriol compounds, one is common and occurs along faults and oxidized zones in metallic mineral deposits: green vitriol, better known to geologists and miners as…