Polished Tiger Iron slab TI371 Polished dendritic opal OG182 Polished orbicular granite with

OG182   Polished orbicular granite with natural rough back

Dimensions approximately 135 mm x 85 mm x 8 mm thick

Dimensions at widest points approximately 160 mm x 90 mm x 50 mm thick

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Polished Tiger Iron slab TI371 Polished dendritic opal OG182 Polished orbicular granite withTI371 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 130 mm x 65 mm x 9 mm thick. Weighs: 230 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.