Polished Tiger Iron TI393 mookatite TIR163 Tiger Iron rough rock

TIR163 Tiger Iron rough rock

DO225  Dendritic Opal rough rock

AMU109   Portion of an Amethyst geode with a cut base to stand as a display specimen

210 mm high  x 90 mm x 35 mm thick

Dimensions at widest points approximately 110 mm x 65 mm x 30 mm thick

Polished Tiger Iron TI393 mookatite TIR163 Tiger Iron rough rockTI393 Tiger Iron rough rock, cut and polished on one side with a rough natural back and a cut base to sit as a display specimen. Dimensions at widest points approximately 90 mm x 80 mm x 25 mm thick. Weighs: 412 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,