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.
Age is approx. 1.1 billion years.
Specimen measures approx. 160mm x 105mm, 8mm thick.
It weighs 310grams.