Polished fossil stromatolite. Alcheringa narrina. ALC143 fossil stromatolite Desert Sunset is a banded

Desert Sunset is a banded iron formation that is comprised of alternating layers of red and yellow jasper and chert with narrow bands of black hematite

46 mm x 41 mm x 6 mm thick dome

DO153 Dendritic Opal rough rock

Brecciated Snakeskin Jasper slab

The pink and red colouration can be attributed to the presence of finely disseminated iron oxides

Polished fossil stromatolite. Alcheringa narrina. ALC143 fossil stromatolite Desert Sunset is a bandedALC143. Fossil stromatolite polished slab. Alcheringa narrina from the Archaean Meentheena Member within the Tumbiana Formation. Age is approx. 2. 7 billion years. From near Nullagine in Western Australia. Approx. 95mm x 65mm x 9mm thick. Weighs 140grams.