Polished Tiger Iron TI386 black conglomerate Dimensions at widest points approximately

Dimensions at widest points approximately 280 mm x 160 mm x 12 mm thick

Dimensions at widest points approximately 200 mm x 130 mm x 20 mm thick

Weight is 644 grams

Dimensions at widest points approximately 150 mm x 100 mm x 9 mm thick

OG187   A matching pair of polished Orbicular Granite halves with natural rough backs

Polished Tiger Iron TI386 black conglomerate Dimensions at widest points approximatelyTI386 Tiger Iron rough rock, cut and polished on one side with a rough natural back and a cut base to sit as a display specimen. Dimensions at widest points approximately 160 mm x 70 mm x 40 mm thick. Weighs: 1,085 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,