Polished Tiger Iron slab TI355 brecciated 95 mm x 55 mm

95 mm x 55 mm x 8 mm

320 mm x 140 mm  x 13 mm

BJ121 Polished "Black Jade" A trade name for metamorphosed magnesian tholeiite (basalt)

24 pieces  of mixed varieties of Australian tumble polished gemstones

polymictic

Polished Tiger Iron slab TI355 brecciated 95 mm x 55 mmTI355 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 260 mm x 170 mm x 12 mm thick. Weighs: 1,504 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.