Kilauea Iki Crater (IMAGE) University of Chicago Caption The sparsely vegetated Kilauea Iki Trail crosses the floor of a volcanic crater that was filled with molten lava in in late 1959. Today the University of Chicago's Nicolas Dauphas and his associates use samples collected from the crater to learn how minerals and elements separate as magma cools and hardens. Credit Steve Koppes Usage Restrictions This image may be used in news stories describing the research of Nicolas Dauphas, Fang-Zhen Teng and Rosalind T. Helz. 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.