Polished Tiger Iron slab TI320 alcheringa narrina Dimensions at widest points approximately

Dimensions at widest points approximately 120 mm  x 110 mm x 7 mm thick

DO192  Dendritic Opal slab polished on one side

Most between 7 and 10 mm thick

Dimensions approximately 170mm x 110mm x 11mm thick

Weighs 602 grams

Polished Tiger Iron slab TI320 alcheringa narrina Dimensions at widest points approximatelyTI320 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 130 mm x 70 mm x 7. 5 mm thick. Weighs: 172 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.