Polished Tiger Iron slab TI317 magnesite Dimensions at widest points approximately

Dimensions at widest points approximately 95 mm  x 70 mm x 7 mm thick

Weight of each piece is between 34 and 59 grams

Dimensions at widest points approximately 150 mm x 80 mm x 45 mm thick

Goethite after Marcasite

TI291   Tiger Iron slab

Polished Tiger Iron slab TI317 magnesite Dimensions at widest points approximatelyTI317 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 110 mm x 55 mm x 6 mm thick. Weighs: 107 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.