Polished fossil stromatolite. Alcheringa narrina. ALC157 stripey jasper Dimensions at widest points approximately

Dimensions at widest points approximately 150 mm x 85 mm x 60 mm thick

45 mm x 30 mm x 25 mm

Dimensions at widest points approximately 140 mm x 85 mm x 18 mm thick

Dimensions approximately 340 mm x 180 mm x 9

80 mm x 65 mm x 45 mm

Polished fossil stromatolite. Alcheringa narrina. ALC157 stripey jasper Dimensions at widest points approximatelyALC157 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. 185 mm x 95 mm x 30 mm thick. Weighs 678 grams.