ALC159
Fossil stromatolite , polished on one side with natural weathered exterior on rear.
Small pyrite cubes interspersed !
Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation.
Age is approx. 2.7 billion years.
From near Nullagine in Western Australia.
Dimensions at widest points approx. 120 mm x 85 mm x 50 mm thick.
Weighs 741 grams.
