Polished Tiger Iron TI387 atlantisite IRR 131 Fossil stromatolite slab

IRR 131    Fossil stromatolite slab

100 mm x 90 mm x 50 mm thick

Weighs 375 grams

Dimensions approximately 180 mm x 85 mm x 9 mm thick

Polished Tiger Iron TI387 atlantisite IRR 131 Fossil stromatolite slabTI387 Tiger Iron rough rock, cut and polished on one side with a rough natural back. Dimensions at widest points approximately 140 mm x 85 mm x 60 mm thick. Weighs: 810 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.