Polished Tiger Iron slab TI358 Marramamba From Field's Find in the

From Field's Find in the Midwest region

220 mm x 130 mm x 60 mm thick

Dimensions at widest points approximately 175 mm x 65 mm and 45 mm thick

Dimensions at widest points approximately 140 mm  x 90 mm  x 10 mm thick

Weighs 933 grams

Polished Tiger Iron slab TI358 Marramamba From Field's Find in theTI358 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 190 mm x 120 mm x 6. 3 mm thick. Weighs: 344 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.