Polished Tiger Iron slab TI371 pilbara agate XL111 Quartz crystal from the

XL111 Quartz crystal from the southern Pilbara

OJ166  A rough rock

Dimensions at widest points approximately 145 mm x 75 mm x 8 mm thick

95mm x 45mm x 30mm thick

Polished Tiger Iron slab TI371 pilbara agate XL111 Quartz crystal from theTI371 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 130 mm x 65 mm x 9 mm thick. Weighs: 230 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.