Collecting a Sample (IMAGE) Johannes Gutenberg Universitaet Mainz Caption Yamirka Rojas-Agramonte collecting a sample of weathered basalt rock in a lava cave in the interior of the island of Santa Cruz Credit photo/©: Yamirka Rojas-Agramonte Usage Restrictions This image may only be used in connection with the press release "Mineral discoveries in the Galapagos Islands pose a puzzle as to their formation & origin", issued by Johannes Gutenberg University Mainz on October 19, 2018. 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.