Polished Tiger Iron slab TI371 Polished dendritic opal Dimensions at widest points approximately

Dimensions at widest points approximately 95 mm x 90 mm x 50 mm thick

Dimensions at widest points approximately 185 mm x 145 mm x 12 mm thick

60 -90 mm diameter and weigh between 270 - 540 grams each

Weighs  568 grams

Weighs 119 grams

Polished Tiger Iron slab TI371 Polished dendritic opal Dimensions at widest points approximatelyTI371 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 130 mm x 65 mm x 9 mm thick. Weighs: 230 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.