Polished Tiger Iron display specimen TI330 purple chalcedony 175 mm x 80 mm

175 mm x 80 mm x 11 mm

SD156 Stromatolitic Dolomite slab

Dimensions at widest points approximately 145 mm x 65 mm x 60 mm thick

Dimensions 110 mm x 90 mm x 45 mm thick

Dimensions at widest points approximately 210 mm x 40 mm  x 8 mm thick

Polished Tiger Iron display specimen TI330 purple chalcedony 175 mm x 80 mmTI330 Tiger Iron rough rock, cut and polished on one side with a rough natural back and a cut base to stand as a display specimen. Dimensions at widest points approximately 225 mm x 90 mm x 45 mm thick. Weighs: 1,810 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