Polished fossil stromatolite slab. Asperia ashburtonia. ASP159 chalcedony 70 mm x 50 mm

70 mm x 50 mm  x 30 mm

From the Ashburton region in Western Australia

Dimensions at widest points approximately 110 mm

Dimensions at widest points approximately 110 mm x 90 mm x 45 mm thick

Dimensions at widest points approximately 120 mm x 45 mm x 45 mm thick

Polished fossil stromatolite slab. Asperia ashburtonia. ASP159 chalcedony 70 mm x 50 mmASP159. Fossil stromatolite slab, polished on one side. Asperia ashburtonia from the Proterozoic "Duck Creek Dolomite". Age is approx. 2 billion years. From near Paraburdoo in Western Australia. Dimensions at widest points approx. 180 mm x 150 mm x 6. 5 mm thick. It weighs 369 grams.