Polished Tiger Iron slab TI261 polished prehnite Dimensions approximately 130mm x 100mm

Dimensions approximately 130mm x 100mm x 7mm thick

Weight 554 grams

CH426  Chrysoprase nodule

Dimensions at widest points approximately 70 mm x 35 mm x 30 mm thick

135 mm x 100 mm x 50 mm thick

Polished Tiger Iron slab TI261 polished prehnite Dimensions approximately 130mm x 100mmTI261 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.