Polished fossil stromatolite. Carawine Dolomite CD108 stand ups Asperia ashburtonia from the Proterozoic

Asperia ashburtonia from the Proterozoic "Duck Creek Dolomite"

Extremely rare mineral specimen or suitable for cutting into high end cabochons

Weighs 164 grams

Weighs 770 grams

180 mm x 105 mm x 30 mm thick

Polished fossil stromatolite. Carawine Dolomite CD108 stand ups Asperia ashburtonia from the ProterozoicCD108 Fossil stromatolite, polished on one side with natural weathered exterior. Dimensions at widest points approx. 210 mm x 120 mm x 60 mm thick. Weighs 2,792 grams. The "Carawine Dolomite" is a geological formation that occurs in numerous isolated areas in the eastern part of the Hamersley Basin in the Pilbara region of Western Australia. It contains numerous occurrences of stromatolites and oncolites with an age of between 2. 5 to 2. 6 billion