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IRR 123 Fossil stromatolite slab, polished on one side.
Huge museum quality display piece !
A domal stromatolite from the Proterozoic "Irregully Formation", age approx. 1.1 billion years. Not formally identified but possibly Paniscollenia.
Dimensions at widest points approximately 600 mm x 390 mm x 20 mm thick.
It weighs 10.5 kg.