Stromatolitic Dolomite SD155

SD155 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 165mm x 40mm x 5-45mm thick

Weighs 385grams