RTX2UTG9
13 Dec. 2016
Talca, Chile
U.S. scientist and geologist of the university of Wisconsin, Brad Singer, shows pieces of mineral rock named Riolita, after extracting it in the Laguna del Maule (Lagoon of Maule) in the VII region of Talca, south of Santiago, Chile November 29, 2016. REUTERS/Rodrigo Garrido