Polished fossil stromatolite slab. Domal from Irregully formation IRR129 Irregully formation Sections consist of a chaotic

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

Weighs 180grams

DO153 Dendritic Opal rough rock

From near Paynes Find in the Midwest region

Natural rough back

Polished fossil stromatolite slab. Domal from Irregully formation IRR129 Irregully formation Sections consist of a chaoticIRR 129 Fossil stromatolite slab, polished on one side. From the Proterozoic "Irregully Formation", age approx. 1. 1 billion years. Not formally identified but possibly Paniscollenia. Dimensions at widest points approximately 180 mm x 90 mm x 11 mm thick. It weighs 368 grams..