Polished fossil stromatolite. Strelley Pool Formation SPF135 alcheringa narrina The quartz epidote axinite mineralisation

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

Dimensions at widest points approximately 150 mm x 55 mm  x 9 mm thick

From Widgiemooltha

45 mm x 35 mm  x 22 mm

Polished fossil stromatolite. Strelley Pool Formation SPF135 alcheringa narrina The quartz epidote axinite mineralisationSPF135 Fossil stromatolite . Rough rock with natural back, cut and polished on one side. These are the oldest known fossils on Earth. From the Strelley Pool Formation in the Pilbara region of Western Australia. Age is approx. 3. 4 billion years. Dimensions at widest points approx. 120 mm x 100 mm x 45 mm thick. Weighs 635 grams.