Rare card
Banded iron formation
- Value
- 50 W
- Attack
- 281
- Defence
- 225
- Players
- 0
Banded iron formations (BIFs; also called banded ironstone formations) are distinctive units of sedimentary rock consisting of alternating layers of iron oxides and iron-poor chert. They can be up to several hundred meters in thickness and extend laterally for several hundred kilometers.
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