Polished Tiger Iron slab TI337 rare agate Pilbaria perplexa from the Proterozoic

Pilbaria perplexa from the Proterozoic "Duck Creek Dolomite"

Dimensions at widest points approximately 175 mm x 100 mm x 6 mm thick

WAT105  Tumble polished Wyloo Agate

One edge slightly unpolished

Lovely specimen

Polished Tiger Iron slab TI337 rare agate Pilbaria perplexa from the ProterozoicTI337 Tiger Iron slab, polished on one side. Dimensions at widest points approximately 140 mm x 100 mm x 8 mm thick. Weighs: 310 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.