Plate 5.1Excavations for copper at Parys
Mountain, Anglesey, UK. The spoil heaps provide a
huge surface area for sulphide oxidation. The lake
waters in the pit bottom have pH below 3.
Photograph courtesy of J. Andrews.
Plate 5.2Crusts of iron oxide (goethite) coating
stream bed. Drainage from Parys Mountain, copper
mine Anglesey, UK. Photograph courtesy of
J. Andrews.Plate 6.1Black smoker,
East Pacific Rise. From
Des Oceans aux
Continents. BSGF1984,
(7), XXVI, no 3. Société
Géologique de France,
Paris. Reproduced with
thanks.