Polished Tiger Iron slab TI356 black conglomerate Each piece approximately 4 -

Each piece approximately  4 - 5 cm at widest points

95 mm x 70 mm x 65 mm

Weighs 941 grams

From the Strelley Pool Formation in the Pilbara region of Western Australia

Dimensions at widest points approximately 90 mm x 80 mm x 13 mm thick

Polished Tiger Iron slab TI356 black conglomerate Each piece approximately 4 -TI356 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 350 mm x 190 mm x 9 mm thick. Weighs: 1,379 grams From the Cleaverville Formation, Ord Ranges near Port Hedland, Western Australia. Age is over 3 billion years. Tiger iron is a banded iron formation (BIF) or jaspilite that has alternating layers of black and brown hematite magnetite, red jasper and chatoyant golden tiger eye.