Polished fossil stromatolite. Alcheringa narrina. ALC156 stand ups 115 mm x 50 mm

115 mm x 50 mm x 15 mm thick at widest points

The quartz epidote axinite mineralisation was evidently caused by hydrothermal activity related to the doleritic sills which are in close proximity to the occurrence

160 mm x 130 mm x 7 mm thick

Tumble polished Variscite

Polished fossil stromatolite. Alcheringa narrina. ALC156 stand ups 115 mm x 50 mmALC156 Fossil stromatolite , polished on one side with natural weathered exterior on rear. Museum quality specimen ! 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. 300 mm x 205 mm x 50 mm thick. Weighs 4,730 grams.