Polished fossil stromatolite. Pseudogymnosolenid type. DOG169 black jasper KA139 Kumarina Agate

KA139   Kumarina Agate

24 pieces  of mixed varieties of Australian rough gemstones

Weight 342 grams

SJ152  A polished slab of Starry Jasper

bright blue chrysocolla

Polished fossil stromatolite. Pseudogymnosolenid type. DOG169 black jasper KA139 Kumarina AgateDOG169 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