Polished fossil stromatolite. Alcheringa narrina. ALC144 Citron chrysoprase Weighs 541 grams

Weighs 541 grams

Weighs 220grams

Dimensions at widest points approximately 130 mm x 85  x 25 mm thick

Sections consist of a chaotic mixture of dolomite and/or stromatolite fragments set in a matrix of mudstone and/or coarsely crystalline dolomite

GREEN76  Green Opal & Magnesite rough rock

Polished fossil stromatolite. Alcheringa narrina. ALC144 Citron chrysoprase Weighs 541 gramsALC144. Fossil stromatolite polished slab. 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. 165mm x 75mm x 9mm thick. Weighs 275grams.