Polished fossil stromatolite. Pseudogymnosolenid type. DOG163 Chrome chalcedony Superb museum quality specimen

Superb museum quality specimen

It weighs 80 grams

cut and polished  on one side

All reasonably uniform in size (roughly 20 - 30 mm diameter} A bulk assortment

Dimensions approx

Polished fossil stromatolite. Pseudogymnosolenid type. DOG163 Chrome chalcedony Superb museum quality specimenDOG163 Fossil stromatolite slab, polished on one side An as yet unidentified stromatolite, form of Pseudogymnosolenid type. The stromatolite occurs as small digitate columns which are finely laminated. It probably grew in shallow water conditions with intermittent subaerial exposure. From an unassigned unit of the Wyloo Group. Age is approx. 1. 8 billion years. From south west of Newman Western Australia. Approx. 145 mm x 65 mm x 7 mm thick. Weighs