Polished Tiger Iron TI361 Polished dendritic opal 95 mm x 60 mm

95 mm x 60 mm x 9 mm

Dimensions at widest points approximately 105 mm high x 70 mm x 25 mm thick

Weighs:  310 grams

PU135  Purple Chalcedony slab

Dundas Mineral Field near Zeehan

Polished Tiger Iron TI361 Polished dendritic opal 95 mm x 60 mmTI361 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.