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Tigereisen - Banded Iron Formatio (BIF)

Tigereisen - Banded Iron Formatio (BIF)
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Tigereisen - Banded Iron Formatio (BIF)
Tigereisen - Banded Iron Formatio (BIF)
Tigereisen - Banded Iron Formatio (BIF)
Tigereisen - Banded Iron Formatio (BIF)
Tigereisen - Banded Iron Formatio (BIF)
Tigereisen - Banded Iron Formatio (BIF)

Products description

Here we have a nice slice of banded iron from the Cleaverville Formation in the Pilbara region of Western Australia, dating back to the Archean-Proterozoic transition. This variety of banded iron formation (BIF) represents an ancient marine microbialite, formed during the Great Oxidation Event approximately 3 billion years ago, when iron precipitated from seawater due to rising oxygen levels. The polished section displays alternating layers of magnetite and golden-brown quartz bands often reminiscent of tiger’s eye. These quartz bands may reflect the transformation of earlier crocidolite (blue asbestos) minerals that later underwent metamorphism.
The geological significance of BIFs lies in their role in Earth’s oxygenation: the rise of cyanobacteria and their oxygenic photosynthesis led to widespread iron deposition in the oceans, eventually enriching the atmosphere with oxygen. This oxygenation was crucial for the evolutionary development of complex life, including mammals including us humans.
 
 
 

Location:

Ord Ranges,Port Hedland, Pilbara, Australia 
Size :about 151 x 83 mm
Age:Precambrian, Lower Proterozoic,
Cleaverville Formation  (about  3020 Ma)

Shipping time: 3-4 Days
Product no.: 11637
85,00 EUR
7 % VAT incl.


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