Stromatolitic Dolomite SD154 sskin Dimensions approximately 120 mm x

Dimensions approximately 120 mm x 100 mm x 5 mm thick

130 mm x 90 mm x 5 mm thick

Dimensions approximately 145mm x 75mm x 8mm thick

They usually occur as weathered out nodules formed by branched

Stromatolitic Dolomite SD154 sskin Dimensions approximately 120 mm xSD154 Stromatolitic Dolomite rough rock, cut and polished on one side. Sections consist of a chaotic mixture of dolomite and or stromatolite fragments set in a matrix of mudstone and or coarsely crystalline dolomite . The pink and red colouration can be attributed to the presence of finely disseminated iron oxides . It often contain layers and nodules of red chert. From the Irregully Formation, Western Australia. Dimensions approximately 170mm x 45mm