Polished Tiger Iron slab TI289 stromatolite Dimensions approximately 100 mm x

Dimensions approximately 100 mm x 90 mm x 80 mm thick

Dimensions at widest points approximately 170 mm x 70 mm x 50 mm thick

Dimensions at widest points approximately 80 mm x 65  mm x 8 mm thick

100 mm x 60 mm  x 27 mm

Weighs 180grams

Polished Tiger Iron slab TI289 stromatolite Dimensions approximately 100 mm xTI289 Tiger Iron slab, polished on one side . Dimensions at widest points approximately 180 mm x 70 mm wide x 7 mm thick. Weighs: 228 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.