Polished fossil stromatolite. Pseudogymnosolenid type. DOG169 black jasper 24 pieces of mixed varieties

24 pieces  of mixed varieties of Australian rough gemstones

Weight 434 grams

MN133  Magneprase slab

OG198   Polished orbicular granite with natural rough back

SJ152  A polished slab of Starry Jasper

Polished fossil stromatolite. Pseudogymnosolenid type. DOG169 black jasper 24 pieces of mixed varietiesDOG169 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