Volcanologists in Iceland had sent fresh samples of the ash to Stipp shortly after the eruption. What the researchers found was that even after being soaked in water for two weeks and stirred, the ash particles – one of which can be seen above – maintained their sharp edges. These ash particles are often covered in pieces of chlorine, fluorine and arsenic. Jacopo Taddeucci of Italy’s National Institute of Geophysics and Volcanology and colleagues, also found that even as the eruption was winding down in May 2010, the volcano was still releasing sharp particles of ash. Read More
