Polished Tiger Iron slab TI220 Rhodonite The original structure with annular

The original structure with annular rings visible in this piece

Dimensions approximately 180mm x 130mm x approx  9mm thick

Weight  is 1

190 mm x 90 mm x 10 mm thick

Polished Tiger Iron slab TI220 Rhodonite The original structure with annularTI220 Tiger Iron slab, cut and polished on one side. Dimensions at widest points approximately 55 mm x 50 mm wide x 5 mm thick. Weighs: 44 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.