Polished fossil stromatolite. Alcheringa narrina. ALC156 stripey jasper Dimensions approximately 160 mm x

Dimensions approximately 160 mm x 110 mm x approx  55 mm thick

110 mm x 110 mm x 8 mm

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

5 mm thick

Polished fossil stromatolite. Alcheringa narrina. ALC156 stripey jasper Dimensions approximately 160 mm xALC156 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.