Polished Tiger Iron TI265 prehnite Face is approximately 105mm x

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

From the Strelley Pool Formation in the Pilbara region of Western Australia

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

Weight is 581 grams

Weighs 439 grams

Polished Tiger Iron TI265 prehnite Face is approximately 105mm xTI265 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