Polished Tiger Iron slab TI297 chalcedony 90 mm x 60 mm

90 mm x 60 mm x 30 mm

Dimensions at widest points approximately 110 mm x 110 mm x 4

Dimensions at widest points approximately 150 mm x 80 mm x 90 mm thick

Dimensions at widest points approximately 160 mm x 135 mm x 18 mm thick

From the Proterozoic "Irregully Formation"

Polished Tiger Iron slab TI297 chalcedony 90 mm x 60 mmTI297 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 90 mm x 65 mm wide x 7 mm thick. Weighs: 102 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.