Polished Tiger Iron slab TI371 Polished dendritic opal Dimensions at widest points approximately

Dimensions at widest points approximately 185 mm x 145 mm x 12 mm thick

60 -90 mm diameter and weigh between 270 - 540 grams each

Weighs 119 grams

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Dimensions at widest points approximately 135 mm x 120 mm x 40 mm thick

Polished Tiger Iron slab TI371 Polished dendritic opal Dimensions at widest points approximatelyTI371 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.