Banded Iron Formation

A nearly 3-billion-year-old banded iron formation from Canada shows that the atmosphere and ocean once had no oxygen. 

Banded Iron Formation - an overview

Banded Iron Formation - The Science of Magic

Banded Iron Formation algoma Type Individual Collectors Pieces

Banded Iron Formation - The Australian Museum

Brockman Iron Formation - National Rock Garden

Banded iron formation - Wikipedia

Banded Iron Formations of Michigan's Upper Peninsula

Study confirms banded iron formations originated from oxidized

What is the BIF slab? Western Australian Museum