Polished Tiger Iron slab TI362 magnesite Dimensions approximately 140 mm x

Dimensions approximately 140 mm x 60 mm x 11 mm thick

Dimensions at widest points approximately 100 mm x 80 mm x 70 mm thick

130 mm x 80 mm  x 12 mm

KO113  Killaloe Opal slab

Dimensions at widest points approximately 140 mm x 130 mm x 100 mm thick

Polished Tiger Iron slab TI362 magnesite Dimensions approximately 140 mm xTI362 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 290 mm x 170 mm x 9. 4 mm thick. Weighs: 1,266 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.