Polished Tiger Iron slab TI358 prehnite B226 Black Jasper Conglomerate slab

B226  Black Jasper Conglomerate slab

Dimensions at widest points approximately 260 mm x 140 mm x 17 mm thick

washed up from their source on the ocean floor

It weighs 182 grams

73 mm x 60 mm x 58 mm

Polished Tiger Iron slab TI358 prehnite B226 Black Jasper Conglomerate slabTI358 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 190 mm x 120 mm x 6. 3 mm thick. Weighs: 344 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.