ASP131.
Fossil stromatolite polished on one side with natural weathered exterior.
Asperia ashburtonia from the Proterozoic "Duck Creek Dolomite".
Large museum piece !
Age is approx. 2 billion years.
From near Paraburdoo in Western Australia.
Approx. 220 mm x 220 mm x 50 mm thick. Weight is 3,319 grams.
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