Polished fossil stromatolite. Alcheringa narrina. ALC139 magnesite Weighs 274 grams
Description
Weighs 274 grams
Dimensions at widest points approximately 170 mm x 120 mm x 20 mm thick
Weight 972 grams
Dimensions at widest points approximately 125 mm x 110 mm x 19 mm thick
Polished fossil stromatolite. Alcheringa narrina. ALC139 magnesite Weighs 274 gramsALC139. Fossil stromatolite rough rock, cut and polished on one side . Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation. Age is approx. 2. 7 billion years. From near Nullagine in Western Australia. Approx. 120mm x 95mm x 50mm thick. This piece has a smattering of pyrite inclusions through it. Rare. Weighs 790grams.
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