Stromatolitic Dolomite SD155 striped This piece has a smattering

This piece has a smattering of pyrite inclusions through it

This one has a little heart in it

It weighs 110 grams

Measures approximately 225mm x 120mm and  10mm thick

Stromatolitic Dolomite SD155 striped This piece has a smatteringSD155 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