Polished Tiger Iron TI361 Polished dendritic opal OG190 A matching pair of

OG190   A matching pair of polished Orbicular Granite halves with natural rough backs

Weighs 207 grams

Dundas Mineral Field near Zeehan

Dimensions at widest points approximately 130 mm x 55 mm x 7 mm thick

Polished Tiger Iron TI361 Polished dendritic opal OG190 A matching pair ofTI361 Tiger Iron rough rock, cut and polished on one side with a rough natural back. Dimensions at widest points approximately 120 mm x 120 mm x 80 mm thick. Weighs: 1,863 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.