Stromatolitic Dolomite SD157 mookaite From near Nullagine in Western

From near Nullagine in Western Australia

Weighs 55grams

160 mm x 140 mm x 10 mm thick at widest points

SD155 Stromatolitic Dolomite rough rock

Age approx

Stromatolitic Dolomite SD157 mookaite From near Nullagine in WesternSD157 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