Polished fossil stromatolite. Alcheringa narrina. ALC161 Noreena Dimensions at widest points approximately

Dimensions at widest points approximately 90 mm x 70 mm x 15 mm thick

Dimensions approximately 195 mm x 60 mm x 60 mm thick

Weighs 670 grams

Dimensions at widest point approximately 155 mm x 95 mm x 9

DOT104  Tumble polished Dendritic Opal

Polished fossil stromatolite. Alcheringa narrina. ALC161 Noreena Dimensions at widest points approximatelyALC160 Fossil stromatolite , polished on one side with natural weathered exterior on rear. Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation. Age is approx. 2. 7 billion years. From near Nullagine in Western Australia. Dimensions at widest points approx. 135 mm x 80 mm x 40 mm thick. Weighs 584 grams.