IRR 127 Fossil stromatolite slab, polished on one side.
Beautiful specimen with a glassy polish !
Totally replaced by purple and yellow chert .
From the Proterozoic "Irregully Formation", age approx. 1.1 billion years.
Dimensions at widest points approximately 165 mm x 125 mm x 8 mm thick.
It weighs 364 grams..
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