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SPF117 Fossil stromatolite slab, polished on one side.
Flecks of pyrite visible in this piece !
These are the oldest known fossils on Earth.
From the Strelley Pool Formation in the Pilbara region of Western Australia.
Age is approx. 3.4 billion years.
Dimensions approx. 330 mm x 180 mm x 11 mm thick.
Weighs 1,092 grams.