Stromatolitic Dolomite SD154 sskin From near Norseman in the

From near Norseman in the Eastern Goldfields region of Western Australia

Dimensions approximately 145mm x 75mm x 8mm thick

130 mm x 90 mm x 5 mm thick

They usually occur as weathered out nodules formed by branched

Stromatolitic Dolomite SD154 sskin From near Norseman in theSD154 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