Polished fossil stromatolite. Pseudogymnosolenid type. DOG164 prehnite This piece has a smattering

This piece has a smattering of pyrite inclusions through it

Dimensions approximately 170 mm x 130 mm x 15 mm thick

Weighs 541 grams

Each polished face approximately 95mm x 30mm x 30 mm thick

Polished fossil stromatolite. Pseudogymnosolenid type. DOG164 prehnite This piece has a smatteringDOG164 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. 190 mm x 90 mm x 10 mm thick. Weighs