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

DO163  Dendritic Opal slab

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

Excellent display piece

Dimensions approximately 140 mm x 75 mm x 7

Dimensions at widest points approximately 160 mm x 90 mm x 90 mm thick

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.