Actinium compound (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption Researchers grew crystals of a pure actinium compound, seen here through a microscope, to understand how actinium binds to other molecules in a solid. Credit Jen Wacker/Berkeley Lab Usage Restrictions N/A 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.