Stromatolitic Dolomite SD157 polished magneprase Dimensions at widest points approximately

Dimensions at widest points approximately 225 mm x 80 mm x 14 mm thick

105 mm x 75 mm x 7 mm thick

Weighs 140grams

Dimensions approximately 220mm x 115mm x 4-10mm thick

Stromatolitic Dolomite SD157 polished magneprase Dimensions at widest points approximatelySD157 Stromatolitic Dolomite slab, 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 130mm x 100mm x 7mm thick