Polished fossil stromatolite. Alcheringa narrina. ALC161 Noreena SU164 Sunset Jasper slab

SU164 Sunset Jasper slab

Weighs 670 grams

DOT104  Tumble polished Dendritic Opal

Oncolite is a limestone composed largely of oncoids—rounded

Dimensions at widest points approximately 160 mm x 100 mm x 75 mm thick

Polished fossil stromatolite. Alcheringa narrina. ALC161 Noreena SU164 Sunset Jasper slabALC160 Fossil stromatolite , polished on one side with natural weathered exterior on rear. Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation. Age is approx. 2. 7 billion years. From near Nullagine in Western Australia. Dimensions at widest points approx. 135 mm x 80 mm x 40 mm thick. Weighs 584 grams.