Banded iron formation (BIF). Algoma-type BIF from the Archaean. Dark is magnetite, white is quartz.

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Width of sample 9 cm.

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Size: 3600px × 2400px
Location: Bjørnevatn, Norway
Photo credit: © Siim Sepp / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: algoma, archaean, banded, biochemogenic, biogenic, chemogenic, chert, formation, iron, ironstone, magnetite, metamorphic, ore, quartz, rock, sedimentary, type