Stromatolitic Dolomite SD156 ashburton agate 150mm x 110mm x 8mm

150mm x 110mm x 8mm thickness

Weighs 140grams

Dundas region

polished on one side with natural weathered exterior

Weighs 936 grams

Stromatolitic Dolomite SD156 ashburton agate 150mm x 110mm x 8mmSD156 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