The study of banded iron formations (BIFs) offers a unique window into early Earth’s geochemical cycles and the evolution of its oceans and atmosphere. These sedimentary deposits, characterised by ...

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 ...

Banded iron formations, such as this one pictured in Western Australia, precipitated out of the Earth's early oceans billions of years ago, and are providing new clues to the evolution of ancient ...

The world's primary economic source of iron ore, iron formations, are ancient sedimentary rocks that appear as solid as rocks can be. How did they get to be like that? According to researchers, it has ...