Polished Tiger Iron slab TI343 Polished dendritic opal DO163 Dendritic Opal slab

DO163  Dendritic Opal slab

Dimensions at widest points approximately 170 mm x 105 mm x 8 mm thick

Dimensions at widest points approximately 90 mm x 70 mm x 11 mm thick

Excellent display piece

It weighs 218 grams

Polished Tiger Iron slab TI343 Polished dendritic opal DO163 Dendritic Opal slabTI343 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 100 mm x 70 mm x 7 mm thick. Weighs: 134 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.