Polished fossil stromatolite. Pseudogymnosolenid type. DOG169 black jasper From near Newman

From near Newman

24 pieces  of mixed varieties of Australian rough gemstones

OG198   Polished orbicular granite with natural rough back

MN133  Magneprase slab

KA139   Kumarina Agate

Polished fossil stromatolite. Pseudogymnosolenid type. DOG169 black jasper From near NewmanDOG169 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