Basalt Sample (image) Deutsches Elektronen-Synchrotron DESY Caption This shows thin slices of basalt with a diameter of just a fraction of a millimeter were subjected to high pressure in a diamond anvil cell. This sample has been molten and subsequently probed with X-rays three times. Credit Chrystèle Sanloup, University of Edinburgh Usage Restrictions Free to use for the media only when reporting on the related paper. Credit must be given. 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.