Polished Tiger Iron slab TI351 lemon chrysoprase Some crystal faces

Some crystal faces

245 mm x 100 mm x 11 mm thick

NJ476  A rough rock

Dimensions at widest points approximately 120 mm x 50 mm x 60 mm thick

140 mm x 95 mm x 65 mm thick

Polished Tiger Iron slab TI351 lemon chrysoprase Some crystal facesTI351 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 220 mm x 170 mm x 8 mm thick. Weighs: 769 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.