Polished fossil stromatolite. Alcheringa narrina. ALC139 magnesite Dimensions at widest points approximately

Dimensions at widest points approximately 170 mm x  120 mm x 20 mm thick

SD157 Stromatolitic Dolomite slab

Weighs 608 grams

From our mining claim on Woodlands Station

Dimensions at widest points approximately 120 mm x 60 mm x 11 mm thick

Polished fossil stromatolite. Alcheringa narrina. ALC139 magnesite Dimensions at widest points approximatelyALC139. Fossil stromatolite rough rock, cut and polished on one side . Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation. Age is approx. 2. 7 billion years. From near Nullagine in Western Australia. Approx. 120mm x 95mm x 50mm thick. This piece has a smattering of pyrite inclusions through it. Rare. Weighs 790grams.