Stromatolitic Dolomite SD154

SD154 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 170mm x 45mm x 15-45mm thick

Weighs 630grams