15th Annual Smithsonian Magazine Photo Contest Natural World
Rio Tinto

384/5000 The river is known for the reddish color of its waters, hence its name. The coloration has its origin in the weathering of minerals containing heavy metal sulphides found in the deposits along the river. These deposits are hydrothermal deposits composed largely of pyrite rocks (iron sulfide) and chalcopyrite (iron and copper disulfide).

Photo Detail
Date Taken: 10.2016
Date Uploaded: 11.2017
Photo Location: Huelva, Spain
Copyright: © Patricia Izquierdo Ortiz