Figure 1 (IMAGE) Tohoku University Caption Field-view of a rare lawsonite eclogite in Guatemala. This distinctive variety of eclogite demonstrates exceptional water storage capabilities attributed to the presence of lawsonite, a hydrated calcium-aluminum sorosilicate mineral with the chemical formula CaAl2(Si2O7) (OH)2·H2O. Credit Tatsuki Tsujimori Usage Restrictions Reporters may use freely these materials in news coverage with appropriate credit information. 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.