Polished fossil stromatolite. Alcheringa narrina. ALC156 stripey jasper All reasonably uniform in size

All reasonably uniform in size (roughly 20 - 30 mm diameter} A bulk assortment

Weighs 630grams

Dimensions approximately 185 mm x 95 mm x 6 mm thick

Dimensions approximately 175 mm x 160 mm x 5 mm thick

110 mm x 110 mm x 8 mm

Polished fossil stromatolite. Alcheringa narrina. ALC156 stripey jasper All reasonably uniform in sizeALC156 Fossil stromatolite , polished on one side with natural weathered exterior on rear. Museum quality specimen ! 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. 300 mm x 205 mm x 50 mm thick. Weighs 4,730 grams.