Polished Tiger Iron slab TI373 axinite Approximate weight of each piece

Approximate weight of each piece is between 16 and 41 grams

68 mm x 53 mm x 30 mm

Sections consist of a chaotic mixture of dolomite and/or stromatolite fragments set in a matrix of mudstone and/or coarsely crystalline dolomite

165 mm x 150 mm  x 17 mm thick

Dimensions at widest points approximately 305 mm x 180 mm x 11 mm thick

Polished Tiger Iron slab TI373 axinite Approximate weight of each pieceTI373 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 160 mm x 110 mm x 7 mm thick. Weighs: 363 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.