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Cut rock samples from the Rio Grande Rise

By Pacific Coastal and Marine Science Center March 2018 (approx.)
A series of photo graphs of rock samples that have been cut in half to reveal the inside structure.
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Detailed Description

Cut rock samples from the Rio Grande Rise show iron-manganese, or Fe-Mn, crusts (black and gray) growing on various types of iron-rich substrate rocks (pale to dark brown).

Sources/Usage

Public Domain.