Polished Tiger Iron slab TI320 alcheringa narrina DO192 Dendritic Opal slab polished

DO192  Dendritic Opal slab polished on one side

Weighs 602 grams

Most between 7 and 10 mm thick

Dimensions approximately 170mm x 110mm x 11mm thick

Dimensions at widest points approximately 80 mm x 80 mm x 8

Polished Tiger Iron slab TI320 alcheringa narrina DO192 Dendritic Opal slab polishedTI320 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.