Stromatolitic Dolomite SD156 stand ups 13 mm thick

13 mm thick

Dimensions approximately 195 mm x 100 mm x 45 mm thick

Extremely rare mineral specimen or suitable for cutting into high end cabochons

150 mm x 90 mm x 6

Stromatolitic Dolomite SD156 stand ups 13 mm thickSD156 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 170mm x 100mm x 7mm thick