Polished fossil stromatolite. Pseudogymnosolenid type. DOG163 ashburton agate This piece has a smattering

This piece has a smattering of pyrite inclusions through it

120 mm x 70 mm x 45 mm thick

Dimensions at widest points approximately 600 mm x 390 mm x 20 mm thick

IRR120  Fossil stromatolite slab polished on one side

Polished fossil stromatolite. Pseudogymnosolenid type. DOG163 ashburton agate This piece has a smatteringDOG163 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