Polished fossil stromatolite. Pseudogymnosolenid type. DOG169 black jasper MN133 Magneprase slab

MN133  Magneprase slab

Weight 342 grams

24 pieces  of mixed varieties of Australian rough gemstones

KA139   Kumarina Agate

Dimensions at widest points approximately 125 mm x 110 mm x 19 mm thick

Polished fossil stromatolite. Pseudogymnosolenid type. DOG169 black jasper MN133 Magneprase slabDOG169 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. 80 mm x 70 mm x 7 mm thick. Weighs 99