Polished Tiger Iron slab TI356 pilbara agate grinding or polishing as the

grinding or polishing as the matrix holding the pisolites (small round pebbles) is in many cases quite soft

Dimensions at widest points approximately 100 mm x 60 mm x 35 mm thick

EU116  Eucryptite slab

90 mm x 75 mm x 9 mm thick

Chalcedony grading into silicated magnesite

Polished Tiger Iron slab TI356 pilbara agate grinding or polishing as theTI356 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 350 mm x 190 mm x 9 mm thick. Weighs: 1,379 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.