Polished fossil stromatolite. Alcheringa narrina. ALC159 mookaite Dimensions at widest points approximately

Dimensions at widest points approximately 95 mm  x 70 mm x 7 mm thick

110 mm x 75 mm x 30 mm

185 mm x 90 mm x 80 mm

Weighs 308 grams

Dimensions at widest points approximately 100 mm x 60 mm x 11 mm  thick

Polished fossil stromatolite. Alcheringa narrina. ALC159 mookaite Dimensions at widest points approximatelyALC159 Fossil stromatolite , polished on one side with natural weathered exterior on rear. Small pyrite cubes interspersed ! 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. 120 mm x 85 mm x 50 mm thick. Weighs 741 grams.