Polished Tiger Iron slab TI264 Polished Beryl The porphyry pictured here has

The porphyry pictured here has pinkish coloured clinozoisite crystals set in a ground mass of dolerite

Dimensions approximately 75 mm x 55 mm x 18 mm thick

This stone occurs in the Pilbara region of Western Australia

TIR136 Tiger Iron rough rock

Polished Tiger Iron slab TI264 Polished Beryl The porphyry pictured here hasTI264 Tiger Iron slab, cut and polished on one side. Dimensions at widest points approximately 140 mm x 80 mm wide x 8 mm thick. Weighs: 192 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.