Polished Tiger Iron slab TI267 #teredo PC112 Chalcedony slab

PC112 Chalcedony slab

Dimensions at widest points approximately 190 mm x 160 mm x 37 mm thick

Dimensions at widest points approximately 150 mm x 115 mm x 60 mm thick

Weighs:  645 grams

A late stage quartz vein crosscutting the nodule

Polished Tiger Iron slab TI267 #teredo PC112 Chalcedony slabTI267 Tiger Iron slab, cut and polished on one side. Dimensions at widest points approximately 130 mm x 100 mm wide x 8 mm thick. Weighs: 287 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.