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File:Iron hydroxide precipitate in stream.jpg

Description: Iron hydroxide precipitate (orange) in a Missouri stream receiving acid drainage from surface coal mining.

Source: Environmental Contaminants; Status and Trends of the Nations Biological Resources (Retrieved May 5, 2005)

Credit: D. Hardesty, USGS Columbia Environmental Research Centre.

Public domain This image is in the public domain because it contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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