Fibers of the Mineral Erionite (IMAGE) Friedrich-Schiller-Universitaet Jena Caption Fibers of the mineral erionite with adhering particles, taken by a transmission electron microscope at the Institute of Geosciences of the University Jena. Credit Photo: Kilian Pollok/FSU Jena Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.