Polished Tiger Iron slab TI364 Polished rock. DOT105 Tumble polished Dendritic Opal

DOT105  Tumble polished Dendritic Opal

150 mm x 90 mm x 30 mm thick

2 billion years

Dimensions at widest points approximately 155 mm x 100 mm x 30 mm thick

Polished Tiger Iron slab TI364 Polished rock. DOT105 Tumble polished Dendritic OpalTI364 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 140 mm x 105 mm x 7 mm thick. Weighs: 262 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.