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Reference
20170033_0010
Chert ou chaille découverte à Pilbara en Australie et datant de 3 446 millions d’années
Chert discovered at Pilbara, Kitty’s Gap, Australia. This 15-cm concretion dates back 3446 million years. It belongs to the Molecular Biophysics Centre (CBM) rock collection, a unique collection of terrestrial rocks and minerals, some dating back several billion years.
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