Rio Tinto (river)
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The Río Tinto is a highly toxic river in southwestern Spain that rises in the Sierra Morena mountains of Andalusia. It flows generally south-southwest, reaching the Gulf of Cádiz at Huelva. The Río Ti
Rio Tinto
Roman wooden wheel for extracting water from deep Rio Tinto mines and now in the British Museum (1st-2nd Centuries AD)
The Río Tinto in 2006
Río Tinto river
Acid mine drainage
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Acid mine drainage, acid and metalliferous drainage, or acid rock drainage is the outflow of acidic water from metal mines and coal mines.
Rio Tinto (river)
…the river shores. As a possible result of the mining, the Río Tinto is very acidic (pH 2) with its deep reddish hue due to iron dissolved in the water. Acid mine drainage from the mines leads to severe environmental problems because the acidity (low pH) dissolves heavy metals into the water. It is not clear how much acid…
Rocks stained by ferrous precipitate from acid mine drainage on Shamokin Creek in Northumberland County, Pennsylvania
In this case, the pyrite has dissolved away yielding a cube shape and residual gold. This break down is the main driver of acid mine drainage.
Yellow boy in a stream receiving acid drainage from surface coal mining