Stromatolitic Dolomite SD154 sskin Dimensions approximately 170mm x 100mm

Dimensions approximately 170mm x 100mm x 7mm thick

They usually occur as weathered out nodules formed by branched

Dimensions approximately 145mm x 75mm x 8mm thick

160 mm x 130 mm x 7 mm thick

Stromatolitic Dolomite SD154 sskin Dimensions approximately 170mm x 100mmSD154 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