Polished fossil stromatolite. Asperia ashburtonia. ASP150 mookalite 220 mm x 220 mm

220 mm x 220 mm x 50 mm thick

The environment they grew in was possibly freshwater algal marshes

From our mining claims on Turee Creek Station in the Pilbara region of Western Australia

Sections consist of a chaotic mixture of dolomite and/or stromatolite fragments set in a matrix of mudstone and/or coarsely crystalline dolomite

BA108  Polished Brazilian Agate slab

Polished fossil stromatolite. Asperia ashburtonia. ASP150 mookalite 220 mm x 220 mmASP150. Fossil stromatolite . Cut and polished on one side with natural rough exterior on rear. 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. 280 mm x 110 mm x 30 mm thick. It weighs 1,798 grams.