Polished fossil stromatolite slab. Strelley Pool Formation SPF151 Citron chrysoprase Approximate dimensions at widest points

Approximate dimensions at widest points 95 mm  x 95 mm  x 80 mm thick

Dimensions at widest points approximately 50 mm x 30 mm x 22 mm thick

Dimensions at widest points approximately 140 mm x 120 mm x 55 mm thick

Weighs 75 grams

Polished fossil stromatolite slab. Strelley Pool Formation SPF151 Citron chrysoprase Approximate dimensions at widest pointsSPF151. Fossil stromatolite slab, 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 approx. 250 mm x 150 mm x 13 mm thick. Weighs 822 grams.