IRR105 Fossil stromatolite slab, cut and polished on one side.
A domal stromatolite from the Proterozoic "Irregully Formation" in Western Australia. Amazing colours in this rare specimen.
Yet to be formally identified but possibly Paniscollenia .
Age is approx. 1.1 billion years.
Specimen measures approx. 160mm x 105mm, 8mm thick.
It weighs 310grams.