Polished Tiger Iron TI379 polished magneprase The matrix that this copper

The matrix that this copper based mineral forms on is kaolinite

90 mm x 60 mm x 30 mm

Approximate diameter at widest points of sun is 70 mm

Weighs 536 grams

POP201 Pink Opal slab

Polished Tiger Iron TI379 polished magneprase The matrix that this copperTI379 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 190 mm x 80 mm x 35 mm thick. Weighs: 1,283 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,