Stromatolitic Dolomite SD155 Tumbled stones It weighs 240 grams

It weighs 240 grams

Weighs 790grams

Beautiful slab displaying multi-coloured agate banding with a quartz crystal lined cavity

Bauxite is the main raw material used in the commercial production of aluminium

grinding or polishing as the matrix holding the pisolites (small round pebbles) is in many cases quite soft

Stromatolitic Dolomite SD155 Tumbled stones It weighs 240 gramsSD155 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