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PP118. Fossil stromatolite slab, polished on one side.
Pilbaria perplexa from the Proterozoic "Duck Creek Dolomite".
Age is approx. 2 billion years.
From near Paraburdoo in Western Australia.
Approx. 380 mm x 40-180mm x 12mm thick.
Lovely specimen.
1,675 grams.