Stromatolitic Dolomite SD157 dendrite At widest points approx

At widest points approx

with both halves polished on one side

These small branching columnar stromatolites are from the “Mount Leake Sandstone”

Dimensions: approximately 115 mm high x 75 mm x  45 mm thick

Not formally identified but possibly Paniscollenia

Stromatolitic Dolomite SD157 dendrite At widest points approxSD157 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 130mm x 100mm x 7mm thick