Sonoran Turquoise (IMAGE) Geological Society of America Caption This is a turquoise sample from Cananea, Sonora, Mexico. Credit Image from <a target="_blank"href="http://en.wikipedia.org/wiki/Turquoise#/media/File:Big_turquoise_from_Cananea.jpg">Wikipedia</a>; <a target="_blank"href="https://creativecommons.org/licenses/by/2.0/">CC BY 2.0</a> Usage Restrictions <a target="_blank"href="https://creativecommons.org/licenses/by/2.0/">CC BY 2.0</a>; Credit Wikipedia. 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.