Polished Tiger Iron slab TI376 fossil stromatolite Dimensions at widest points approximately

Dimensions at widest points approximately 150 mm x 110  mm x 7 mm thick

It weighs 348 grams

220 mm x 95 mm  x 13 mm

It weighs 172 grams

Dimensions approximately 220 mm x 155 mm x 10 mm thick

Polished Tiger Iron slab TI376 fossil stromatolite Dimensions at widest points approximatelyTI376 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 170 mm x 80 mm x 22 mm thick. Weighs: 769 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.