Polished Tiger Iron slab TI261 polished prehnite CH426 Chrysoprase nodule

CH426  Chrysoprase nodule

Weighs 282 grams

Unusual colouration caused by natural iron oxide weathering

Weight 554 grams

Dimensions at widest points are approximately 180 mm x 80 mm x 50 mm

Polished Tiger Iron slab TI261 polished prehnite CH426 Chrysoprase noduleTI261 Tiger Iron slab, cut and polished on one side. Dimensions at widest points approximately 140 mm x 90 mm wide x 8 mm thick. Weighs: 227 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.