Underwater steam explosions and the collapse of the vent structures resulted in great piles of fragmented sulfides. These were later transformed into the ore seen here when iron- and zinc-rich waters reacted with the sulfide fragments and cemented them together.
Provided by Falconbridge Limited, Timmins, Ontario, Canada
Topic: Earth Science
Subtopic: Minerals and Resources
Keywords: Hydrogeology, Natural resources, ore deposits, Sulfides