Polished Tiger Iron slab TI352 Marra Mamba Tiger Eye Prehnite rough rock

Prehnite rough rock

Thickness is slightly tapering  6 - 8 mm thick

Dimensions at widest points approximately 85 mm x 50 mm x 25 mm thick

From Nullagine in the Pilbara region of Western Australia

Dimensions at widest points approximately 170 mm x 45 mm x 15

Polished Tiger Iron slab TI352 Marra Mamba Tiger Eye Prehnite rough rockTI352 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 155 mm x 90 mm x 7. 3 mm thick. Weighs: 304 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.