Polished Tiger Iron slab TI275 #gemstone IRR 131 Fossil stromatolite slab

IRR 131    Fossil stromatolite slab

Dimensions at widest points approximately 155 mm x 150 mm x 50 mm thick

cut and polished on one side with a natural weathered back and a cut base to stand as a display specimen

Dimensions approximately 50mm x 85mm x 7mm thick

Polished Tiger Iron slab TI275 #gemstone IRR 131 Fossil stromatolite slabTI275 Tiger Iron slab, polished on one side . Dimensions at widest points approximately 120 mm x 95 mm wide x 8 mm thick. Weighs: 235 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.