Bio-Mining Fool’s Gold (IMAGE) DOE/US Department of Energy Caption Electron micrograph of the microorganism Methanococcus voltae grown with pyrite. The pyrite grains are attached to coccoid cells that have extracellular appendages that connect the cells to each other. Scale bar is 200 nanometers. Credit Image courtesy of the Imaging and Chemical Analysis Laboratory, Montana State University. Usage Restrictions Image courtesy of the Imaging and Chemical Analysis Laboratory, Montana State University. License Original 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.