Polished Tiger Iron TI265 prehnite Dimensions at widest points approximately

Dimensions at widest points approximately 100 mm x 100 mm x 65 mm thick

Face is approximately 105mm x 50mm and  7mm thick

140 mm x 125 mm x 40 mm thick

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

Polished Tiger Iron TI265 prehnite Dimensions at widest points approximatelyTI265 Tiger Iron rough rock, cut and polished on one side with a natural rough back. Dimensions at widest points approximately 200 mm x 100 mm wide x 80 mm thick. Weighs: 2,765 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