Stromatolitic Dolomite SD154 polished slab This material is VERY rare

This material is VERY rare

80 mm x 35 mm  x 20 mm

Dimensions approximately 150mm x 110mm x 10mm thick

With a cut base to stand up as a display piece

Weighs 204 grams

Stromatolitic Dolomite SD154 polished slab This material is VERY rareSD154 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