New Occurrence of Graphite Associated with Apatite in One of the Four Oldest Sedimentary Rocks Known (IMAGE)
Caption
Controversies have surrounded the rock from Greenland (lower right), and the significance of graphite (red) with apatite (turquoise) in such rocks, for the past 20+ years. Note the coarse-grain size of both highly metamorphosed banded iron formations. The thin sections (bottom) are paper-thin slices of the rock.
Credit
Dominic Papineau Ph.D.
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Credit Dominic Papineau Ph.D.
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