Polished Tiger Iron slab TI293 ashburton agate Approximate dimensions at widest points

Approximate dimensions at widest points 110 mm  x 85 mm  x 45 mm thick

a banded iron formation

NJ450   Noreena Jasper slab

approximately 200 miles north of Perth

Polished Tiger Iron slab TI293 ashburton agate Approximate dimensions at widest pointsTI293 Tiger Iron slab, polished on one side . Dimensions at widest points approximately 80 mm x 35 mm wide x 6. 5 mm thick. Weighs: 59 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.