Polished Tiger Iron slab TI274 #googleimages Dimensions at widest point approximately

Dimensions at widest point approximately 130 mm x 110 mm x 8 mm

banded chert

It often contain layers and nodules of red chert

AMU101   Amethyst geode from Artigas

"Stripey Snakeskin" for obvious reasons

Polished Tiger Iron slab TI274 #googleimages Dimensions at widest point approximatelyTI274 Tiger Iron slab, polished on one side . Dimensions at widest points approximately 105 mm x 90 mm wide x 9 mm thick. Weighs: 221 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.