Polished Tiger Iron slab TI262 chrysoprase McGrath Formation" which has an

McGrath Formation" which has an age of close to 2 billion years

TIR134 Tiger Iron rough rock

Dimensions at widest points approximately 100 mm x 75 mm x 40 mm thick

DO174  Dendritic Opal slab

Weighs 149 grams

Polished Tiger Iron slab TI262 chrysoprase McGrath Formation" which has anTI262 Tiger Iron slab, cut and polished on one side. Dimensions at widest points approximately 150 mm x 90 mm wide x 9 mm thick. Weighs: 317 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.