Stromatolitic Dolomite SD154 polished slab CLA227 A slab

CLA227   A slab

20 - 25 mm across

Dimensions approximately 150mm x 110mm x 10mm thick

This material is VERY rare

Stromatolitic Dolomite SD154 polished slab CLA227 A slabSD154 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