Stromatolitic Dolomite SD159 petrified wood Each polished face approximately 95mm

Each polished face approximately 95mm x 30mm x 30 mm thick

BA105  Polished Brazilian Agate slab

This museum quality specimen has been cut at right angles to the bedding and displays the columnar structure beautifully

105 mm x 75 mm x 7 mm thick

Huge museum quality specimen

Stromatolitic Dolomite SD159 petrified wood Each polished face approximately 95mmSD159 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 165mm x 105mm x 8mm thick