ALC144.
Fossil stromatolite rough rock, cut and polished on one side, with great weathered rough side.
Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation.
Age is approx. 2.7 billion years.
From near Nullagine in Western Australia.
Approx. 165mm x 75mm x 9mm thick.
Weighs 275grams.
