Polished fossil stromatolite. Alcheringa narrina. ALC160 Polished Rhodonite PU133 Purple Chalcedony slab

PU133  Purple Chalcedony slab

Dimensions at widest points approximately 80 mm x 90 mm x 6 mm thick

Dimensions at widest points approximately 145 mm x 130 mm x 55 mm thick

Dimensions at widest points approximately 180 mm x 160 mm x 50 mm thick

165 mm x 100 mm x 10 mm thick

Polished fossil stromatolite. Alcheringa narrina. ALC160 Polished Rhodonite PU133 Purple Chalcedony slabALC160 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. 110 mm x 70 mm x 30 mm thick. Weighs 404 grams.