Polished fossil stromatolite. Carawine Dolomite CD106 Tumbled stones age approx

age approx

Face is approximately 105mm x 50mm and  7mm thick

Tumble polished Chrome Chalcedony

55km NW of Kalgoorlie

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

Polished fossil stromatolite. Carawine Dolomite CD106 Tumbled stones age approxCD106 Fossil stromatolite, polished on one side with natural weathered exterior. Dimensions at widest points approx. 180 mm x 105 mm x 30 mm thick. Weighs 1,164 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