Built in 1891, the Jeddo Tunnel discharges acid mine drainage high in iron, aluminum, manganese, and sediment. Located in Pennsylvania anthracite mine region. #fyp #abandoned #coalmine #explore #urbex #tunnel #anthracite #abandonedplaces #jeddotunnel #trending #ruins #minedrainage #followme

Iron hydroxides forming in acid waters draining out of a sulphide mine. Acid drainage forms when sulphides interact with atmospheric oxygen and water, forming sulfuric acid, which carries metals in water solution.

Limonite and other hydroxides forming in the acid drainage of the Rio Albano Mine, Elba.

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#geology #oredeposits #minedrainage #mining