Polished Tiger Iron slab TI346 peanut Sometimes it exhibits striking contrasting

Sometimes it exhibits striking contrasting veins of magnesite

Dimensions at widest points approximately 85 mm x 40 mm x 7 mm thick

150 mm x 50 mm  x 8

Weighs 689 grams

MK517   Mookaite

Polished Tiger Iron slab TI346 peanut Sometimes it exhibits striking contrastingTI346 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.