Stromatolitic Dolomite SD157 polished magneprase cut and polished on one

cut and polished  on one side

180 mm x 150 mm x 8

Weighs:  645 grams

105 mm x 75 mm x 7 mm thick

Brecciated Snakeskin Jasper rough rock

Stromatolitic Dolomite SD157 polished magneprase cut and polished on oneSD157 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