Polished Tiger Iron slab TI346 peanut HEM131 Hematite geode half

HEM131  Hematite geode half

130 mm x 100 mm x 7 mm thick

Sometimes it exhibits striking contrasting veins of magnesite

Kaolinite has unusual reddish hue in this piece

Polished Tiger Iron slab TI346 peanut HEM131 Hematite geode halfTI346 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 200 mm x 165 mm x 7. 5 mm thick. Weighs: 607 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.