Polished fossil stromatolite slab. Strelley Pool Formation SPF138 Citron chrysoprase Dimensions at widest points approximately

Dimensions at widest points approximately 190 mm x 150 mm x 30 - 65 mm thick

Dimensions at widest points approximately 135 mm x 120 mm x 11

CO120  DeGrussa copper ore slab

Dimensions at widest points approximately 170 mm x 100 mm x 100 mm thick

140 mm x 130 mm x 11  mm thick

Polished fossil stromatolite slab. Strelley Pool Formation SPF138 Citron chrysoprase Dimensions at widest points approximatelySPF138. 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. 240 mm x 200 mm x 13 mm thick. Weighs 1,088 grams.